Wii Sports Wiki

Not to be confused with Jackknife Challenge.

The Jackknife is a Strength exercise in the Wii Fit series.


Lay down on your back to start.

Bring your towards you until your thighs are aimed straight upwards.

Bend your ankles forward a bit.

Bring your head up until you are directly facing your legs.

Bring your arms forward to touch your shins.

Go back down and repeat this exercise.

Activity Level

  • 10 Reps
  • 20 Reps
  • 30 Reps

Purpose of exercise

This exercise helps to strengthen your abdominal muscles and to promote flexibility in your neck.

Strength Training
Single Leg ExtensionSideways Leg LiftArm and Leg LiftSingle-Arm StandBalance BridgeTorso TwistsRowing SquatSingle Leg TwistLungeSide LungePush-Up and Side PlankJackknifePlankTricep ExtensionPush-Up ChallengePlank ChallengeJackknife Challenge
Training activities
YogaBalance GamesAerobics