Band Jack Knife Sit-up demonstration
Exercise

Band Jack Knife Sit-up

Abs Band weight & reps

Also works: Glutes

How to do it

  1. Lie flat on your back with your legs straight and your arms extended overhead, holding the band.
  2. Engage your abs and lift your legs and upper body simultaneously, bringing your hands towards your feet.
  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 Band Jack Knife Sit-up as weight & reps — every set counts toward your volume, PRs and XP.

Track it in FYL All abs exercises

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