jackknife sit-up
The jackknife sit-up is a bodyweight exercise targeting the abdominal muscles. It involves simultaneously lifting the legs and upper body to meet in the middle, engaging the core and hip flexors.
Difficulty
Equipment: Bodyweight
Duration: 30seconds
Calories: ~7/per minute
STRENGTH
Target Muscle
absCORE
Secondary Muscles
hip flexors
Instructions
- Lie flat on your back with your legs extended and your arms overhead.
- Engage your core and lift your legs and upper body simultaneously, reaching your hands towards your toes.
- 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.
