jackknife sit-up
jackknife sit-up — highlighted muscle: abs

Muscles worked

abs, hip flexors

Sign in to saveWatch a demonstration

© Gym visual — https://gymvisual.com/

jackknife sit-up

Body part
waist
Equipment
body weight
Target muscle
abs
Muscle group
hip flexors

Secondary muscles

hip flexors

How to perform it

  1. 1

    Lie flat on your back with your legs extended and your arms overhead.

  2. 2

    Engage your core and lift your legs and upper body simultaneously, reaching your hands towards your toes.

  3. 3

    Pause for a moment at the top, then slowly lower your legs and upper body back down to the starting position.

  4. 4

    Repeat for the desired number of repetitions.

Similar exercises