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Jackknife Sit-Up 101 Video Tutorial

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Jackknife Sit-Up
Jackknife Sit-Up

Exercise Synopsis

Target Muscle Group

Abs

Secondary Targets

Execution

Compound

Force Type

Core

Required Equipment

Body Weight

Fitness Level

Intermediate

Variations

None

Timer

Hour

Minute

Second

Stopwatch

00:00:00:00

Overview

The jackknife situp is an exercise that targets the abdominal muscles, particularly the rectus abdominis or six-pack muscles. To perform the jackknife situp, lie on your back with your knees bent and your feet flat on the floor. Place your hands behind your head and then slowly sit up, bringing your knees to your chest. Keep your back straight and your abdominal muscles engaged throughout the movement. Slowly lower yourself back down to the starting position and repeat. The jackknife situp is a challenging exercise, but it is an effective way to strengthen your abdominal muscles and improve your overall core strength.

How to Perform

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Tips

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How Not to Perform