Cross-Body Crunch

Muscles worked

Main muscles
- Diaphragm
What it is
This bodyweight exercise targets your abdominal muscles by engaging them in a rotational crunching motion. You lie on your back and bring one elbow toward the opposite knee, strengthening your core. It is an effective movement for improving core stability and muscular endurance.
Technique tips
- Support your head lightly with your hands, do not pull on your neck.
- Focus on lifting your shoulder toward your knee, not just your elbow.
- Actively contract your abdominal muscles throughout the movement.
- Exhale forcefully as you crunch, inhale as you return to start.
- Control the descent, do not let gravity drop you quickly.
How to track your progress
Log reps, and add the extra load if you wear a belt or a vest. Straddly counts your bodyweight in the estimated max, so added weight and extra reps both show up as progress, and new records are flagged during the session.