Form cues
- Chin tucked
- Reach toward ceiling
- Don't strain neck
- Slow movement
Exercise
Straight-Leg Up Crunch
Waist, body weight
A crunch variant with straight legs held vertically to challenge upper abdominals.
Target: rectus abdominis. Also works: obliques, hip flexors.
Steps
- Lie on back, legs straight up, feet flexed.
- Place arms beside you or hands behind head.
- Engage core, lift head and shoulders toward legs.
- Pause at top, exhale.
- Lower down with control.
Common mistakes
- Jerking up
- Using momentum
- Flaring elbows
Breathing
Exhale as you crunch up, inhale as you lower down.
In the app, search for Straight-Leg Up Crunch and add it to a workout.