->''"My body is ready."''
--> --'''Reggie Fils-Aime''', during ''Wii Fit'' demonstration at Nintendo's E3 2007 press conference

Remember how your parents told you playing video games would make you gain a bunch of weight, lead to bad posture, etc, etc? Well, guess what? They're wrong!

''Wii Fit'', part of the UsefulNotes/{{Wii}} Series (which includes ''VideoGame/WiiSports'' and ''WiiPlay''), is an interactive series of exercises, mainly using the Wii Balance Board. These exercises include yoga, strength exercises, aerobics, and fun little balance games. The game also keeps track of players' body mass index and weight.

It's a huge seller, and the balance board it comes with is already being used as a peripheral for other Wii and UsefulNotes/WiiU games.

As with any gym or exercise regime you'll get out what you put in. Many of the toughest exercises are also the ones most easy to do even without the game (eg. running, press-ups or jackknifes) and the rest could easily be provided by some yoga and aerobic exercise videos. What Wii Fit provides that videos and willpower don't is a regular schedule and encouragement to keep on going along with the ability to match your progress against earlier efforts.

Of course, there is some debate as to how effective it actually is as a weight loss tool (and some research show that ''Wii Sports'' is more effective in that respect).

There is a sequel entitled ''Wii Fit Plus'', which makes the original game pretty much obsolete as it contains everything the original does and more. A second sequel, ''Wii Fit U'', has been released for the UsefulNotes/WiiU. It is accompanied by the Fit Meter, a pedometer that tracks your physical activity and calories burned outside of using ''Wii Fit U''. The data can then be synced to your profile in the game. The female and male trainers appear in the new ''VideoGame/SuperSmashBros'' as playable characters. [[MemeticMutation Is your body ready?]]
!!Contains examples of:
* AndYourRewardIsClothes: ''Wii Fit U'' includes unlockable alternate outfits for your Mii. Most are {{Fun T Shirt}}s for completing the pedometer courses (for instance, when you accumulate a climbing height equivalent to the Statue of Liberty, you get a shirt with the Statue on it.)
* BareYourMidriff: The female trainer only wears a sports bra, exposing her stomach.
* ButtMonkey[=/=]AmusingInjuries: Your poor Mii gets abused a lot.
* CluckingFunny: The Bird's-Eye Bullseye game dresses your Mii up in a chicken suit as you flap your arms to fly around.
** EverythingsBetterWithPenguins: Until you reach the "Extra" difficulty, which exchanges it for a penguin suit. Obviously, penguins don't fly as well.
* DistaffCounterpart: The trainers.
* EmbeddedPrecursor: ''Wii Fit Plus'' does everything ''Wii Fit'' did, and it adds a bunch more content besides. If you have ''Plus'' but not the original, don't bother hunting down a copy unless you ''really'' need a complete collection. Same goes for ''U'', which includes most things that ''Plus'' does.
* {{Exergaming}}: Perhaps not the first, perhaps not even the TropeCodifier, but it was the first to prove these games can be {{Cash Cow Franchise}}s.
* GuideDangIt: If you don't know which muscles are your "core muscles", don't expect the game to stop and explain it to you.
* HumanSnowball: Miss the jump in the ski jump minigame and your hapless Mii will roll down the slope as a big snowball.
* FantasticFireworks: Each time you roll a ball in the right tube in ''Tilt City'', you are granted with a firework. Each time you roll a big ball with a Mii face on it in the rght tube, you're granted with a grand firework ''perfectly representing the Mii''.
* JumpScare: The "you lose" sound for Lotus Focus is a shout of "CUT!" followed by the candle going out and a quieter whisper of "And that's the end", or "this ends our session".
* {{Kiai}}: The Miis in Rhythm Kung Fu shout loudly when performing a move.
* LotusPosition: One of the training games. If you sit still enough long enough during this game, your on-screen character [[LevitatingLotusPosition starts levitating]].
* MissionPackSequel: ''Wii Fit Plus'' has ''all'' of the training games on ''Wii Fit'', including some Training Plus exclusives and allows you to keep track of your pets' weights. At least the sequel carries over your save data. ''Wii Fit U'' has further additions over ''Plus'', though it seems some exercises got dropped in exchange.
* {{Mondegreen}}: One move in Rhythm Kung Fu sounds like everyone is yelling "CAP-COM!"
* NintendoHard: Some of the balance games (and the Training Plus in ''Wii Fit Plus'')
* RankInflation:The better the player performs, the better will be his star rating, which goes from 1 to 4.
* SceneryPorn:
** ''Wii Fit Plus'' is worth buying for the beautiful lighting effects and fireworks in Tilt City alone.
** Wuhu Island, especially during the running and chicken flapping exercises in Training Plus.
* ShoutOut: The trainer in Rhythm Boxing, a middle-aged heavyset black man designed to look like [[VideoGame/PunchOut Doc Louis from Punch-Out!!]].
* ShowsDamage: The punching bag in Rhythm Boxing emits smoke after enough landed punches. More punches mean more smoke.
* SlippySlideyIceWorld: The Advanced Obstacle Course is covered in ice, which makes it hard for your Mii to stop, and can send them careening off the edge of a platform or into something that will smack them silly.
* SnowySleighBells: Sleigh bells are used in the [[https://www.youtube.com/watch?v=ri5RiZw0RQM Penguin Slide theme]], the [[https://www.youtube.com/watch?v=3VquLba1wVM Snowball Fight theme]] and the [[https://www.youtube.com/watch?v=CEiorSf4WSQ Core Luge theme]], since all these activities are heavily related to winter and ice.
* SquashedFlat: This will happen to your Mii in the obstacle course if you fail to jump over the logs in time.
* TightropeWalking: This is featured as one of the balance games.
* UpdatedRerelease: ''Wii Fit Plus''. It has new games, a slightly better weight system, and there are now new functions such as the ability to track your pet's weights. ''Wii Fit U'' is treated more as a new game than just a rerelease, but it too has many of the same functions and exercises as before.
* TheWorldIsJustAwesome: Wuhu Island is a truly fantastic work of art. If only it were real...