Jackknife Sit-up

abswaistbody weight

Learn how to do the Jackknife Sit-up with proper form and technique. This body weight exercise primarily targets your Abs, with secondary emphasis on Hip Flexors.

Jackknife Sit-up exercise demonstration showing proper form

How to Do the Jackknife Sit-up

Follow these steps to perform the Jackknife Sit-up with correct form:

  1. 1Lie flat on your back with your legs extended and your arms overhead.
  2. 2Engage your core and lift your legs and upper body simultaneously, reaching your hands towards your toes.
  3. 3Pause for a moment at the top, then slowly lower your legs and upper body back down to the starting position.
  4. 4Repeat for the desired number of repetitions.

Jackknife Sit-up Muscles Worked

Primary

abs

Secondary

hip flexors

Exercise Details

Equipment
body weight
Body Part
waist
Category
Extended

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