Form cues
- Keep chin off chest
- Lower back pressed to floor
- Controlled movement
- Exhale on crunch
Exercise
Waist, body weight

A basic abdominal crunch performed lying on the floor to strengthen the rectus abdominis.
Target: rectus abdominis. Also works: obliques.
Form cues
Common mistakes
Exhale as you crunch up, inhale as you lower down.
In the app, search for Floor Crunch and add it to a workout.