Form cues
- Keep core braced
- Don't arch lower back
- Control leg extension
- Crunch chest up
Exercise
Weighted Leg Extension Crunch
Waist, weighted
A core exercise combining a crunch with a resisted leg extension to engage the abdominals.
Target: rectus abdominis. Also works: hip flexors, obliques.
Steps
- Lie flat on your back with knees bent, holding a weight across your chest.
- Lift your legs to tabletop position (knees over hips, 90-degree bend).
- Simultaneously extend your legs outward and crunch your upper body up.
- Pause briefly at peak contraction.
- Return arms and legs to the starting position.
Common mistakes
- Using momentum
- Letting lower back arch
- Holding breath
Breathing
Exhale as you crunch and extend, inhale as you return.
In the app, search for Weighted Leg Extension Crunch and add it to a workout.