[[quoteright:350:[[Manga/BlackLagoon http://static.tvtropes.org/pmwiki/pub/images/BLnegotiation_8881.png]]]]
[[caption-width-right:350:[[AggressiveNegotiations Negotiation]]]]
To become a hero, one has to train their body and mind so that it can think and act quickly in a life or death situation. They might enroll in a local dojo to learn martial arts or study psychology in order to better understand the human mind. However, there are times when the hero's best training can come from their day job or general hobbies. Often times it's a means of acquiring a ChekhovsSkill.

For times when characters train in sports and apply their athletic abilities in combat situations see IKnowMaddenKombat. Also look toward IKnowMortalKombat for situations related to video games.

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!!Examples:

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[[folder: Anime and Manga ]]

* Makanochi Ippo from ''HajimeNoIppo'' acquired his large amount of strength in his arms and legs by helping out his mother's fishing business.
** Sawada was a great boxer as he understood the capabilities of the human body better than most people because he was studying to be a doctor.
* Rock from ''Manga/BlackLagoon'' was a former salaryman before joining the Lagoon Company. Now he uses his previous skills and handles business negotiations and public relations for the group of mercenaries.
* Simon from ''[[TengenToppaGurrenLagann Gurren Lagann]]'' was a former driller who later piloted a robot; the robot's special weapon is a giant drill.
* Sanji from ''OnePiece'' acquired his speed and toughness while working in the kitchen under a bad-tempered RetiredBadass.
* A character in the lacrosse series ''Baggataway'' gained her speed and throwing skills by working in her parents' ramen shop.
* Takumi from ''InitialD'' learns his drifting skills by making a nightly tofu delivery up and down a mountain for five years. The only reason he bothered with the drifting, rather than just driving normally? Driving was boring, and he wanted to get home faster. He doesn't even realize exactly what it is he's doing before he begins racing.
* In ''Manga/HayateTheCombatButler'', this is the explanation given for many of Hayate's non-butler skills. Between the jobs he did for his father and the jobs he did to support himself since he was eight (he's only sixteen at the time of the story). His skills as a butler have a completely different origin.
* Sena of ''[[EyeshieldTwentyOne Eyeshield21]]'' began developed his exceptional footwork as a result of being bullying into (literally) running errands throughout his school years. He was briefly taught some proper running technique by a football-playing friend of his beforehand, though, and has to put in a lot of hard work to refine his skills for use on the field.

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[[folder: Comics ]]

* Yorick from ''YTheLastMan'' is an escape artist and magician by hobby. The various magic tricks he's learned has saved his life on more than on occasion.

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[[folder: Film ]]

* Andy in ''Film/TheGoonies'' was able to save her friends from a deadly trap on account of the fact she took piano lessons when she was four years old.
* Towards the beginning of the fantasy movie ''The Monkey King'', the main character mentions that he's a champion at his business's racquetball tournaments. Towards the end, he uses a sword like a racket to [[PlayingTennisWithTheBoss knock back the Big Bad's energy blasts]].
* A borderline case from ''ShaolinSoccer'': Mui, the bun store girl, uses ''tai chi'' to knead and spin dough. She later uses these skills [[spoiler:to help Team Shaolin at the soccer finals.]]
* ''Film/{{Aliens}}''. After Ripley is stripped of her flight license, the only job she can get is at the docks running loaders and forklifts. This later comes in useful when she has to drive a heavy armoured personnel carrier, and use an exoskeleton-forklift to battle the Queen Alien.
* ConanTheBarbarian became so strong because in his youth, he was a slave who did some [[WheelOfPain really heavy work]].
** This explanation is exclusive to the movie; in Creator/RobertEHoward's stories, he was enslaved only after he was as strong as he was.

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[[folder: Literature ]]

* In Temping Fate, the main character picks up some very interesting skills in her day job. She does temp work for the gods -- specifically, the Greek Fates.
* "Ground Rice" from The 36th Chamber of Shaolin. As he says, all his life he's ground rice using a simple machine operated with the legs, so his legs are incredibly powerful.
* In both ''LegendOfTheSeeker'' and the [[SwordOfTruth original books]], Richard's skills as a woods guide come in handy quite often, considering how often he and his party find themselves wandering through one sort of wilderness or another.
* ''[[TheWheelOfTime Perrin]]'' is made extremely strong due to being an apprentice blacksmith. And also gets his alternate [[DropTheHammer weapon]] from it.
** The same applies for [[{{Belgariad}} Durnik]].
* ''Literature/SeptimusHeap'': Nicko Heap during his work on Jannit Maarten's boatyard picks up some impressive strengh that plays a minor role in the ''Syren'' plot.
* ''The Persian Boy'' the eunuch Bagoas is a trained dancer. He uses a dance move to kill a soldier who is trying to rape him.

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[[folder: Live Action TV ]]

* In an episode of ''Series/{{Heroes}}'', Nikki was able to knock out a bad guy using a roundhouse kick on account of her work as a pole dancer.
* Jay and Grant from ''GhostHunters'' often use the same skills they use from their plumbing day jobs in order to debunk and solve alleged hauntings.
* In the 2nd episode of ''Series/BandOfBrothers'', Buck Compton throws a grenade at a fleeing German soldier, which hits him in the back and explodes. Buck was the star catcher for UCLA's baseball team so this kind of feat under pressure was probably natural for him. Inverted in the same episode, however, as he tries to throw another grenade, gets bumped, and drops it amongst his own men causing momentary panic.
* ''Series/DoctorWho'': Donna Noble, Super Temp. She can find her way across an office blindfolded. (Or so she claims.)
* {{Chuck}} frequently uses his IT skills gained at the Buy More either on missions or as cover.
* Arguably, JonathanCreek.
* During the DeathTakesAHoliday episode of ''Series/DeadLikeMe'', the reapers have to catch up on paperwork, and the ever-apathetic George (who has a job at an office temp agency) goes on a long rant about what types of organizational methods they might want to use, while everyone else just stares at her.
-->'''George:''' It's amazing what you learn when you're trying as hard as you can not to learn anything.

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[[folder: Video Games ]]

* ''VideoGame/ResidentEvilOutbreak'' has several characters who have special skills based off of their occupations. George is a doctor and can make medicine while David is able to combine items and make new weapons using duct tape on account of being a plumber.
* Doctor Stiles was able to defuse a bomb in ''TraumaCenter'' because of his steady hands and surgical tools.
** In the second ''TraumaCenter'' game Stiles uses his surgical knowledge and tools to dismantle a computer operated door.
* One of the books that can be found in ''Franchise/TheElderScrolls'' series tells the story of a young man who was able to learn the skills he needed to become an [[AxCrazy axe wielding]] [[PsychoForHire assassin]] through the chores he was put through while growing up on a farm by an EvilUncle (his first [[AssholeVictim victim]]). You can read [[http://www.uesp.net/wiki/Lore:The_Axe_Man The Axe Man here]] courtesy of the Unofficial Elder Scrolls Pages.
** That story also illustrates, almost perfectly, how many Lost in ''TabletopGame/ChangelingTheLost'' have "benefitted" from their durance.
* Link works as a goatherder in Ordon Village in ''VideoGame/TheLegendOfZeldaTwilightPrincess''. His goat-wrangling skills, demonstrated in the early parts of the game, come in handy later -- first to get past the Gorons guarding the trail to Death Mountain, and [[spoiler:in the endgame to wrangle Ganondorf's beast form]].
** Taken to an even more direct extreme in ''VideoGame/TheLegendOfZeldaSpiritTracks'', where Link is conveniently trained to be a railroad conductor -- the only job that will allow him to travel around New Hyrule as needed to complete the adventure.

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[[folder: Western Animation ]]

* The Box Ghost from ''DannyPhantom'' looks like a longshoreman and is first seen at a port. Hence his status as master of "All things cardboard and square".
** For that matter, the Lunch Lady Ghost used to be a cafeteria lady. One who used meat in her recipe. [[LethalChef Guess what she uses for a weapon]]?
* Inverted in ''KimPossible'', Ron gets running experience while doing some [[CouldHaveBeenMessy Deadly Dodging]] and makes use of it in the local sports team. Played straight in the same series, as Kim uses her cheerleading moves to [[SheFu dodge death rays and other obstacles]].

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[[folder: Real Life ]]

* Spartacus. Fighting skills and showmanship learnt in the arena prepared him, effectively, to lead an army of a hundred thousand escaped slaves and gladiators. (He did not actually do the whole hero-ideological-overthrow-Rome thing, preferring only to go home, and eventually was defeated, of course, but it was still a pretty good show.)

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