History Main / PowerStrainBlackout

* ''WesternAnimation/ElenaOfAvalor'': Since the power of the Scepter of Light is CastFromHitPoints, Elena becomes weaker and more tired the more she uses it. When using it to defeat Orizaba, she uses so much power she ends up passing out for two whole days.

* In the ''WesternAnimation/FantasticFourWorldsGreatestHeroes'' episode "Recap/FantasticFourWorldsGreatestHeroesDoomsday", Reed experiences this after stretching far enough to close the Negative Zone portal. Unfortunately, he's high in the air when it happens.

* Overusing spells in ''Literature/IsItWrongToTryToPickUpGirlsInADungeon'' will drain the caster's mind until they suffer "Mind Zero" and pass out. This happens to Bell after he learns Fire Bolt and casts it one too many times, and has to be saved by Aiz again. He learns to be more conservative afterwards.

** Rogue faints after some time if she [[PowerCopying absorbs the powers]] of a sufficiently strong superpowered person, such as Magneto. This DependingOnTheWriter, though, as Rogue has absorbed power from the likes of Juggernaut as well as [[AllYourPowersCombined multiple heroes at once]] with little, to no ill effects.

* ''ComicBook/DoctorStrange'': Happens to Doctor Strange on occasion, since magical exertion takes a toll on the body. Once he muttered, "I never used to black out. Now it seems it's all I do."

* ''ComicBook/XStatix'': U-Go Girl from the short-lived Mike Allred ''ComicBook/XForce''. Her power would literally drain her energy and she'd more than occasionally pass out after using her whirly teleportation.

Compare to FaintingSeer, which may overlap for {{Seers}}. May overlap with CastFromLifespan, and usually will overlap with CastFromStamina. Subtrope of {{Fainting}}.

* In ''Anime/MegamanNTWarrior Axess'', after repelling the VillainOfTheWeek [=SavageMan=], Lan faints after exiting [[FusionDance Cross Fusion]] with [=MegaMan=].
* In ''Anime/MetalFightBeyblade'', Madoka faints after using her bey to save Kyoya's Leon. It's explained as her "not being used to blading."

* ''ComicBook/{{Runaways}}'': In early issues, [[CuteBruiser Molly]] would black out from exhaustion after throwing a single punch. As she got more used to it she wouldn't pass out, but would still need a nap after using her powers.

** Many telepaths of the various ''X-Men'' incarnations do this at least once in almost all of their adaptations.
** ComicBook/{{Rogue}} faints after some time if she [[PowerCopying absorbs the powers]] of a sufficiently strong superpowered person, such as Magneto. Though this DependingOnTheWriter as Rogue has absorbed power from the likes of ComicBook/{{Juggernaut|MarvelComics}} as well as [[AllYourPowersCombined multiple heroes at once]] with little, to no ill effects.
** ComicBook/{{Storm|MarvelComics}} passed out in mid-air after powering down a planet-threatening supercell of her own creation (Dr. Doom had trapped her as a statue and creating the supercell was her hysterical claustrophobic reaction to being trapped thus).
** At the beginning of ''ComicBook/UltimateXMen'' Storm has a tendency to faint, not from the use of power itself but from the mental effort required to reduce collateral damage -- since she has no experience with aiming her lightning.
** When he was young [[note]]specifically, during the early run of ''ComicBook/UncannyXMen''[[/note]], ComicBook/{{Cyclops|MarvelComics}} often fainted after releasing his EyeBeams. With practice (and several retcons about how his powers worked) he learned to draw energy from [[ThePowerOfTheSun sources]] other than his own body.

* ''WesternAnimation/TheSecretOfNIMH'': Also happens to Mrs. Brisby, immediately after [[https://www.youtube.com/watch?v=8Q6WCdQm2Jo the film's climax]], wherein she uses [[MacGuffin The Stone]] for the first and only time to move her home. She collapses as its power subsides, then passes out.

* ''Film/{{Birds of Prey|2020}}'': Black Canary, once she unleashes the full extent of her signature Metahuman ability the [[SuperScream Canary Cry]] to send some {{Mooks}} flying, collapses in exhaustion.
* In ''Film/{{Freaks|2018}}'', Chloe faints twice after a massive outburst of power.
* ''Franchise/{{Godzilla}}'': ''Film/ShinGodzilla''. When Godzilla uses its nuclear breath for the first time, [[spoiler:it's enough to absolutely annihilate most of Tokyo but uses up so much energy it goes into a comatose state for two weeks, allowing the humans to plan a strategy to neutralize Godzilla when it wakes up]].

* ''Film/TheMatrixReloaded'': At the conclusion, in the real world, Neo and the crew of the ''Nebuchadnezzar'' escapes a bomb [[spoiler:that destroys their ship]], only to find themselves about to be ripped apart by [[KillerRobot Sentinels]]. [[spoiler:However, Neo can now sense and communicate with real-world machinery. He hacks the five Sentinels, causing them to short and deactivate.]] The process causes Neo to fall unconscious [[spoiler:and inadvertently jack himself, without hardware, into a Matrix-connected construct world, temporarily imprisoning himself.]]
* ''Film/SpiderMan2'': Peter manages to stop the runaway elevated train, using only his webbing and brute strength. He afterward passes out from the strain but is caught by the passengers before he can fall very far.
* Franchise/MarvelCinematicUniverse:

* ''WesternAnimation/AvatarTheLastAirbender'':
** The first time Aang enters the Avatar State in the pilot episode and several times in the first season before he gets used to it, he is visibly exhausted afterward. By Season Two, he's typically okay even if emotionally distressed.
** ''WesternAnimation/TheLegendOfKorra'': In the OriginsEpisode, Wan's first attempt at merging with Raava and using all four elements burns through his energy rather quickly and causes him to pass out. Once he fully fuses with her and becomes the First Avatar, he doesn't have this problem anymore.

** In ''[[WesternAnimation/WolverineAndTheXMen2009 Wolverine and the X-Men]]'', Christy faints after using her [[DishingOutDirt earth powers]] to protect herself, her father, Wolverine, and Mystique from an explosion.

* Wrestling/DwayneJohnson blacked out after filming the scene in ''Film/{{Hercules|2014}}'' where Hercules roars, "I AM HERCULES!!" and [[BreakingTheBonds breaks free of his chains]] since they used real chains and he also strained his lungs to the limit with the scream.

* In ''VideoGame/TraumaCenter: Under the Knife'' and its remake ''Trauma Center: Second Opinion'', when Dr. Stiles consciously activates his Healing Touch for the first time in an operation (first time he did it was subconsciously out of desperation to save the patient from imminent death, second time was to practice), he faints afterwards. Dr. Hoffman scolds him and tells him he shouldn't use it anymore lest he rely too heavily upon it, but reluctantly agrees to let Dr. Stiles use it only when he absolutely needs to, leading to the once-per-operation limit on manually using the Healing Touch in subsequent operations[[note]][[GameplayAndStoryIntegration gameplay-wise, if you could just spam Healing Touch all day the game would get too easy]][[/note]] (although the limit is also in the operation in which Dr. Stiles faints).

* ''Literature/TheTowerAndTheHive'': psychic powers work this way, physically fatiguing the psychic after they perform large feats. It's said that whether you lift an object with your arms or with your mind, you're still doing the same amount of "work" and burning the same amount of calories. For really big teleports, they mostly drain power from enormous electric generators, though it still wears them out. In one case, four of the most powerful psychics in existence pool their abilities to teleport a large fleet of warships across interstellar distances, and all of them immediately retire to their beds and sleep for the next twenty hours.

* Happens to ComicBook/DoctorStrange on occasion, since magical exertion takes a toll on the body. Once he muttered, "I never used to black out. Now it seems it's all I do."
* In early issues of ''ComicBook/{{Runaways}}'', [[CuteBruiser Molly]] would black out from exhaustion after throwing a single punch. As she got more used to it she wouldn't pass out, but would still need a nap after using her powers.
* ComicBook/{{Starfire}}, in her very first appearance in the ''ComicBook/TeenTitans'', faints after using her powers.
* U Go Girl from the short-lived Mike Allred ''ComicBook/XForce''. Her power would literally drain her energy and she'd more than occasionally pass out after using her whirly teleportation.

** ComicBook/{{Rogue}} faints after some time if she [[PowerCopying absorbs the powers]] of a sufficiently strong superpowered person, such as Magneto. Though this DependingOnTheWriter as Rogue has absorbed power from the likes of [[ComicBook/JuggernautMarvelComics Juggernaut]] as well as [[AllYourPowersCombined multiple heroes at once]] with little, to no ill effects.

** When he was young [[note]]specifically, during the early run of ''ComicBook/UncannyXMen''[[/note]], ComicBook/{{Cyclops}} often fainted after releasing his EyeBeams. With practice (and several retcons about how his powers worked) he learned to draw energy from [[ThePowerOfTheSun sources]] other than his own body.

** ComicBook/{{Storm}} passed out in mid-air after powering down a planet-threatening supercell of her own creation (Dr. Doom had trapped her as a statue and creating the supercell was her hysterical claustrophobic reaction to being trapped thus).

** When he was young [[note]]specifically, during the early run of ''Uncanny X-Men''[[/note]], ComicBook/{{Cyclops}} often fainted after releasing his EyeBeams. With practice (and several retcons about how his powers worked) he learned to draw energy from [[ThePowerOfTheSun sources]] other than his own body.

* In ''Literature/TheDresdenFiles'', wizards feel fatigue when they use a lot of magic. Pushed too far, it certainly can cause a blackout. Notably, it's like exercising, in that wizards get better as they practice: in the first novel, ''Literature/StormFront'', Harry gets exhausted from too much magic quickly and has to rely on other methods to succeed. By the time of ''Literature/DeadBeat'' and ''Literature/ProvenGuilty'', he's tossing around fire constantly without even slowing down, though he still occasionally relies on mundane weapons. By ''Literature/{{Changes}}'', his magical prowess has expanded to impress the ''White Council'', comprised of wizards with decades, if not ''centuries'' more experience.

* Over using spells in ''Literature/IsItWrongToTryToPickUpGirlsInADungeon'' will drain the caster's mind until they suffer "Mind Zero" and pass out. This happens to Bell after he learns Fire Bolt and casts it one too many times, and has to be saved by Aiz again. He learns to be more conservative afterwards.

* ''Anime/TheVisionOfEscaflowne'': Hitomi's ability to see into the future, via Tarot Cards, often has this effect on her afterwards. It's eventually revealed that both the duration and the severity of her fainting spells is determined by her emotional state. Meaning, the greater her anxiety, the greater its toll on her following her vision; not to mention the part about [[spoiler: her anxiety making those visions come true!]]

** A far more serious occurrence is seen (and more referenced) in ''Goosed'', when Fluttershy tries to drive off a flock of Crystal Geese with The Stare and collapses. Spike is capable of instantly organizing treatment[[note]](and prone to verbally tear a strip off of Applejack for asking this of the already fatigued Fluttershy to begin with)[[/note]] because Twilight Sparkle has done this fairly often since fillyhood, forcing him to learn how to stabilize ponies suffering from magical over-exertion or watch his sister die.

* ''WesternAnimation/TheIncredibles1'': Violet suffers this for a few seconds when her force-field is put under extreme pressure.

* ''Franchise/{{Godzilla}}'': ''Film/ShinGodzilla''. When Godzilla uses its nuclear breath for the first time, [[spoiler:it's enough to absolute annihilate most of Tokyo but uses up so much energy it goes into a comatose state for two weeks, allowing the humans to plan a strategy to neutralize Godzilla when it wakes up]].

* ''Film/SpiderMan2'': Peter manages to stop the runaway elevated train, using only his webbing and brute strength. He afterward passes out from the strain, but is caught by the passengers before he can fall very far.

* ''Series/{{Smallville}}'': When Chloe first uses her healing power, she collapses so completely doctors think she's dead. She actually ''takes on'' the person's injury, but didn't know that, and Lois had apparently been killed. It looked as if she had traded her life for Lois's, but thankfully, she got better. She used her power to that degree once more and stayed apparently dead for 18 hours.

** The Wilder psionic class has the wild surge power, which can boost PsychicPowers above their current level, but with a risk of causing a "psychic enervation", which daze them for a full round afterward and cost more power points.

* In ''VideoGame/ArcanumOfSteamworksAndMagickObscura'', all magic powers run off stamina and going into the negative will knock the character out cold until their stamina returns to the positive. The total stamina is derived from both willpower and physical constitution.

* In ''VideoGame/DragonAgeOrigins'', Wynne's plot power Vessel of the Spirit leaves her stunned and disoriented after every time she uses it. This effect is only alleviated after completing her personal side-quest.

** Noticeable but less pronounced in ''VideoGame/Persona4'' and ''VideoGame/Persona5'' as well: in both games, whenever a new person unlocks their Persona for the first time, they get drained and have to leave the TV World or Mementos pretty much immediately. ''Persona 4'' also has the nature of the TV World drain the stamina of anyone that doesn't have fog-clearing glasses, making them much more tired than normal just by being there. [[spoiler:People that get thrown into the TV World can't fight back without help because they can't summon the energy to do so.]]

* Anyone that has ever served in the military knows the first thing you're taught is never lock your knees while at attention [[TruthInTelevision for this very reason]].

* ''Film/{{Birds of Prey|2020}}'': Black Canary, once she unleashes the full extent of her signature Metahuman ability the [[MakeMeWannaShout Canary Cry]] to send some {{Mooks}} flying, collapses in exhaustion.

* ''Anime/{{Pokemon}}:
** In ''Pokémon X and Y'', Ash and his Greninja have access to a unique SuperMode through battle bonding with each other. However, using the form proves to be very exhausting for Ash, and all the damage Greninja takes Ash feels as well. This eventually reaches its logical conclusion during Ash's rematch with Alan, where Ash ''passes out'' in the midst of battle. While he was winning. It is eventually revealed that Ash and Greninja have this problem because they don't fully trust each other yet. After overcoming a shared HeroicBSOD and making amends, they iron this flaw out, although Ash and Greninja still share each other's pain, albeit on a more downplayed level.
** In Ash's exhibition match against [[spoiler:Prof. Kukui]] in ''Sun and Moon'', the strain of having to control [[spoiler:an absorbed Blast Burn]] combined with its post-win evolution using up the remainder of its energy meant that [[spoiler:Ash's Incineroar]] was declared unable to battle a minute after defeating its rival.

* ''WesternAnimation/TheIncredibles'': Violet suffers this for a few seconds when her force-field is put under extreme pressure.

* Over using spells in ''LightNovel/IsItWrongToTryToPickUpGirlsInADungeon'' will drain the caster's mind until they suffer "Mind Zero" and pass out. This happens to Bell after he learns Fire Bolt and casts it one too many times, and has to be saved by Aiz again. He learns to be more conservative afterwards.

* In ''LightNovel/{{Slayers}}'', the [[DangerousForbiddenTechnique Giga Slave]] spell has this effect on Lina (as well as [[PowerDyesYourHair turning her hair white for a few days]]).

** Luffy falls into this after some of his fights. Usually it's the result of blood loss or poison, though after Enies Lobby and Thriller Bark he passes out from the strain of his Gear 2 technique, which is basically increasing the speed of his blood flow- if it wasn't his rubbery body, the stress on his heart would kill him.
** Cavendish, one of the participants of the Corrida Colosseum tournament in Dressrosa, experiences this [[spoiler:every time his SplitPersonality Hakuba takes over. Hakuba is insanely fast, even by ''One Piece'' standards, and knocked out almost everyone in the ring in a flash]]. Too bad for him, he's participating in a ''tournament'', so this trope kicking in causes him to lose the match in favor of Rebecca, the one gladiator who wasn't knocked out by his attack.
* In ''Anime/{{Pokemon}} X and Y'', Ash and his Greninja have access to a unique SuperMode through battle bonding with each other. However, using the form proves to be very exhausting for Ash, and all the damage Greninja takes Ash feels as well. This eventually reaches its logical conclusion during Ash's rematch with Alan, where Ash ''passes out'' in the midst of battle. While he was winning. It is eventually revealed that Ash and Greninja have this problem because they don't fully trust each other yet. After overcoming a shared HeroicBSOD and making amends, they iron this flaw out, although Ash and Greninja still share each other's pain, albeit on a more downplayed level.

** The "Reserve of Strength" feat allows a spellcaster to boost his caster level, and push the level cap on a spell effect, but in exchange for being stunned for 1-3 rounds, depending on the importance of the boost. If the character is immune to stunning, the spell becomes instead CastFromHitPoints.

* In ''WesternAnimation/MiraculousLadybug,'' using too many Miraculous at once can be draining to the user. Marinette becomes dizzy just wearing the entire collection, and in the fifth season premiere, [[spoiler: Gabriel wearing them all and using them five or so at a time makes him pretty much unbeatable... and brings him closer to total defeat than any of the heroes ever has, as the more he uses his many powers, the more he can barely stand]].

* ''Film/{{Birds of Prey|2020}}'': Black Canary once she unleashes the full extent of her signature Metahuman ability the [[MakeMeWannaShout Canary Cry]] to send some {{Mooks}} flying, collapses in exhaustion.

** ''Film/AvengersInfinityWar'': [[spoiler: Scarlet Witch collapses after using her full power to simultaneously destroy the Mind Stone (along with Vision) and hold back Thanos. Though to be fair Wanda does recover fast and attacks Thanos when he cheats and uses the Time Stone to undo what she did]].
** ''Film/AvengersEndgame'': When Professor Hulk uses the Infinity Gauntlet to bring back everyone who was dusted in ''Infinity War'' he faints soon after with a charred arm. It speaks a lot about the power of the Stones that only Hulk and Thanos can just barely withstand the blowback of the combined energy [[spoiler:as poor Tony Stark (a mortal man) dies when he uses the Gauntlet]].

* ''Franchise/StarWars'', ''Series/TheMandalorian'': The first time The Child is seen using the Force is to lift an enormous, rampaging mudhorn a few feet into the air. The effort is so draining he immediately passes out on letting the mudhorn go and remains unconscious for at least a day.

* ''Franchise/{{Pokemon}}'': [[WaveMotionGun Hyper]] [[BreathWeapon Beam]] is the strongest (non-[[TakingYouWithMe sacrificing]]) attack in ''VideoGame/PokemonRedAndBlue'', but [[PowerAtAPrice in exchange]] it leaves the user [[DownplayedTrope so exhausted that they must spend the next turn recovering]]--[[FinishingMove better hope it takes the target out]] lest they get an ExtraTurn. (Later games in the franchise would introduce other moves with the same mechanic--Frenzy Plant, Blast Burn, Hydro Cannon, Giga Impact, Rock Wrecker, and Roar of Time).

* In ''WesternAnimation/MiraculousLadybug,'' using too many Miraculous at once can be draining to the user. Marinette becomes dizzy just wearing the entire collection, and in the fifth season premiere, [[spoiler: Gabriel wearing them all and using them five or so at a time makes him pretty much unbeatable... and brings him closer to total defeat than any of the heroes ever has, as the more he uses his many powers, the more he can barely stand]].

*** The MC falls unconscious for a few days after summoning his Persona for the first time.

** Noticeable but less pronounced in ''VideoGame/Persona4'' and ''VideoGame/Persona5'' as well: in both games, whenever a new person unlocks a persona for the first time, they get drained and have to leave the TV world or Cognitive world pretty much immediately. ''Persona 4'' also has the nature of the TV world drain the stamina of anyone that doesn't have fog-clearing glasses, making them much more tired than normal just by being there. [[spoiler:People that get thrown into the TV world can't fight back without help because they can't summon the energy to do so.]]

* In ''Manga/CardCaptorSakura'', Sakura sometimes collapses after transforming Clow Cards into Star Cards. She knows that doing so will build her power, so she rushes it.

** In the 1990s ''WesternAnimation/XMen'' animated series, Jean does this after using her powers on Juggernaut to give him LaserGuidedAmnesia. She does so again in a later episode, after showing Candra the truth of the Assassin's betrayal.

This is especially true when the character uses a power for the first time because they might overdo it due to inexperience. Presumably, the strain of using it is too much for them, causing their mind to shut down in self defense.

* At the end of penultimate episode of ''Anime/MagicalGirlLyricalNanohaAs'', Hayate faints after she uses her powers as the [[PersonOfMassDestruction Mistress of the Night Sky]] for the first time to help defeat an EldritchAbomination.

* In ''Anime/{{Pokemon}} X and Y'', Ash and his Greninja have access to an unique SuperMode through battle bonding with each other. However, using the form proves to be very exhausting for Ash, and all the damage Greninja takes Ash feels as well. This eventually reaches it's logical conclusion during Ash's rematch with Alan, where Ash ''passes out'' in the midst of battle. While he was winning. It is eventually revealed that Ash and Greninja have this problem because they don't fully trust each other yet. After overcoming a shared HeroicBSOD and making amends, they iron this flaw out, although Ash and Greninja still share each other's pain, albeit on a more downplayed level.

* In ''Manga/SoulEater'', Sid collapses after using his power to get the main characters and Stein outside of the trap set for the whole school. In fairness to him, he ''had'' just nearly been blown up then rushed all the way back to Death City.

* ''Anime/YuGiOhCapsuleMonsters'' has the Duel Armor. After the first battle with it Yami Yugi collapses, and in the subsequent episode Yugi is still feeling the effects. This lessens as the series goes on, but also happens to Jounouchi.

* In early issues of ''ComicBook/{{Runaways}}'', [[CuteBruiser Molly]] would black out from exhaustion after a throwing a single punch. As she got more used to it she wouldn't pass out, but would still need a nap after using her powers.

* In the ''Fanfic/FacingTheFutureSeries'', Danny does this whenever he comes out of his out of control SuperMode.

* In ''Fanfic/LovedAndLost'', Twilight Sparkle uses a shrinking spell Prince Jewelius [[ChekhovsGun showed her a few chapters earlier]] to turn Queen Chrysalis and her entire Changeling army tiny enough to fit a glass jar. She becomes exhausted and faints while Jewelius stages a coup against the princesses. She wakes up to find her friends, brother and the princesses driven away by Jewelius who has made himself Equestria's king. He even manages to [[CorruptTheCutie poison her mind]] and fill her with hatred towards her loved ones.

** Invoked and played for laughs in ''If Rainbow Dash Can't Sleep...'' Given that, even when well rested and fed, performing the Sonic Rainboom leaves her seriously drained; Rainbow Dash reasons that doing so in her current exhausted state would be an excellent insomnia cure. While it worked, leaving her out like the proverbial light, doing so at 3 A. M. directly above Ponyville....

** ''Film/AvengersInfinityWar'': [[spoiler: Scarlet Witch collapses after using her full power to simultaneously destroys the Mind Stone (along with Vision) and hold back Thanos. Though to be fair Wanda does recover fast and attack Thanos when he cheats and uses the Time Stone to undo what she did]].

* ''Film/XMenApocalypse'' has Nightcrawler passing out after he simultaneously teleporting several members of the X-Men before their jet crashes, and Professor X loses consciousness after each time he's {{Mind Rape}}d by Apocalypse.

* Alaric Morgan is apt to do this, since he's a bit of an overachiever and ''Literature/{{Deryni}}'' [[PowerAtAPrice powers are physically taxing to use]]. In ''High Deryni'', Morgan tries to contact Derry mentally (sending a Call) during the reconciliation service for himself and Duncan and faints from the effort; Duncan makes the excuse that his cousin isn't used to fasting. He also collapses from overextending himself to Call on campaign in ''The King's Justice'', and Kelson scolds him for pushing himself too hard.

* Physical exhaustion is the main symptom of overchanneling in ''Literature/TheWheelOfTime'', even to the point of unconsciousness. In extreme cases it can also cause a permanent loss of one's powers.

* ''Series/{{Smallville}}'': When Chloe first uses her healing power, she collapses so completely doctors think she's dead. She actually ''takes on'' the person's injury, but didn't know that, and Lois had apparently been killed. It looked as she had traded her life for Lois's, but thankfully, she got better. She used her power to that degree once more, and stayed apparently dead for 18 hours.

* In ''VideoGame/TraumaCenter: Under the Knife'' and its remake ''Trauma Center: Second Opinion'', when Dr. Stiles consciously activates his Healing Touch for the first time in an operation (first time he did it was subconsciously out of desparation to save the patient from imminent death, second time was to practice), he faints afterwards. Dr. Hoffman scolds him and tells him he shouldn't use it anymore lest he rely too heavily upon it, but reluctantly agrees to let Dr. Stiles use it only when he absolutely needs to, leading to the once-per-operation limit on manually using the Healing Touch in subsequent operations[[note]][[GameplayAndStoryIntegration gameplay-wise, if you could just spam Healing Touch all day the game would get too easy]][[/note]] (although the limit is also in the operation in which Dr. Stiles faints).

* In ''Webcomic/TheCyantianChronicles'', the first time Darrik's [[EnergyBall energy manipulation abilities]] activate, [[http://cyantian.net/akaelae/2009/01/26/01262009/ he tosses]] [[http://cyantian.net/akaelae/2009/01/28/01282009/ a horse]]. It uses so much of he energy that he is left [[http://cyantian.net/akaelae/2009/01/30/01302009/ nearly unconscious]].

* In ''Webcomic/{{Drowtales}}'', it's possible to blackout from overuse of mana. It actually happened to a weaker student in chapter 2. In later chapters Ariel and Chirinide exert themselves enough to become woozy after battle. Those who are more proficient in the mana arts are capable of killing themselves through exertion.

* ''Webcomic/{{Sidekicks}}'': Having flew all the way from the Committee to the prison [[AxCrazy Pluton]] was being kept at, and thus exhausting all of his power, Darkslug suffered one after a brief fight with Pluton.

* Happens to Orrick in ''Webcomic/UndeadFriend'' [[http://undeadfriend.com/comic/undead-friend-chapter-04-page-30/ upon turning back into a human after temporarily being a zombie for the first time.]] He nearly passes out the second time he reverses back as well, but manages to stumble home with a bit of help.

** ''WesternAnimation/TheLegendOfKorra'': In the OriginsEpisode, Wan's first attempt at merging with Raava and using all four elements burns though his energy rather quickly and causes him to pass out. Once he fully fuses with her and becomes the First Avatar, he doesn't have this problem any more.

* Wrestling/DwayneJohnson blacked out after filming the scene in ''Film/{{Hercules|2014}}'' where Hercules roars, "I AM HERCULES!!" and [[BreakingTheBonds breaks free of his chains]], since they used real chains and he also strained his lungs to the limit with the scream.

* Music/XJapan drummer Music/YoshikiHayashi was somewhat infamous for this, until his doctors and managers demanded he take it down a notch.
* Anyone that has ever served in a military knows the first thing you're taught is never lock your knees while at attention [[TruthInTelevision for this very reason]].