TETSUBand Jack Knife Sit-Up
The Band Jack Knife Sit-Up is a band exercise for the core that primarily targets the abs, with the hip flexors assisting. Follow the 4 steps below for correct form, with an animated demonstration.
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How to do the Band Jack Knife Sit-Up
- Lie flat on your back with your legs straight and your arms extended overhead, holding the band.
- Engage your abs and lift your legs and upper body simultaneously, bringing your hands towards your feet.
- Pause for a moment at the top, then slowly lower your legs and upper body back down to the starting position.
- Repeat for the desired number of repetitions.
Common questions
What muscles does the Band Jack Knife Sit-Up work?
The Band Jack Knife Sit-Up primarily targets the abs. The hip flexors work as supporting muscles.
What equipment do I need for the Band Jack Knife Sit-Up?
You need a band to perform the Band Jack Knife Sit-Up.
How many sets and reps of the Band Jack Knife Sit-Up should I do?
3 to 4 sets of 10 to 15 controlled reps of the Band Jack Knife Sit-Up suits most programs — smaller muscle groups respond well to moderate loads and strict form. Progress by adding reps first, then small weight increments.
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