Jackknife Sit-up
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.
How to Do the Jackknife Sit-up
Follow these steps to perform the Jackknife Sit-up with correct form:
- 1Lie flat on your back with your legs extended and your arms overhead.
- 2Engage your core and lift your legs and upper body simultaneously, reaching your hands towards your toes.
- 3Pause for a moment at the top, then slowly lower your legs and upper body back down to the starting position.
- 4Repeat for the desired number of repetitions.
Jackknife Sit-up Muscles Worked
Primary
Secondary
Exercise Details
- Equipment
- body weight
- Body Part
- waist
- Category
- Extended
Related Exercises
Frequently Asked Questions
What muscles does the Jackknife Sit-up work?
The Jackknife Sit-up primarily targets your Abs. Secondary muscles worked include Hip Flexors. This makes it an effective exercise for developing your waist.
Do I need equipment for the Jackknife Sit-up?
No. The Jackknife Sit-up is a bodyweight exercise that requires no equipment. You can perform it anywhere with enough space.
How do I perform the Jackknife Sit-up with proper form?
Start by lie flat on your back with your legs extended and your arms overhead.. Engage your core and lift your legs and upper body simultaneously, reaching your hands towards your toes. Pause for a moment at the top, then slowly lower your legs and upper body back down to the starting position. Focus on controlled movement throughout the entire range of motion. See the full step-by-step instructions above for complete form guidance.
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