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Abs · Band · Intermediate

How to do Band Jack Knife Sit-up

The band jack knife sit-up is an abdominal exercise that uses a resistance band to increase difficulty. It targets the abs and also works the hip flexors. The movement involves simultaneously lifting the legs and upper body while holding a resistance band, requiring core strength and coordination.

Band Jack Knife Sit-up demonstration
Primary muscle
Abs
Also works
Hip flexors
Equipment
Band
Level
Intermediate
Category
Abs

How to do Band Jack Knife Sit-up, step by step

  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.

Muscles worked

Band Jack Knife Sit-up works your abs as the main mover, with help from your hip flexors.

Track Band Jack Knife Sit-up in SPLYT

Band Jack Knife Sit-up is already in SPLYT’s exercise library. Log your sets, reps and weight on iPhone or Apple Watch, with last time’s weights already filled in.

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