Jackknife Sit-up demonstration
Exercise

Jackknife Sit-up

Abs Bodyweight bodyweight reps

Also works: Glutes

How to do it

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

In FYL you log the Jackknife Sit-up as bodyweight reps — every set counts toward your volume, PRs and XP.

Track it in FYL All abs exercises

Similar abs exercises