Tuck Crunch

What it is

This core exercise involves lifting your upper body towards elevated knees while maintaining a stable lower back. It primarily strengthens and tones your abdominal muscles. You use only your body weight to perform this movement.

Technique tips

• Ensure your lower back remains pressed into the floor throughout the movement.
• Exhale as you lift your torso and inhale as you slowly lower it back down.
• Keep your knees and toes aligned parallel to the floor with a slight bend.
• Initiate the crunch from your core, not by pulling with your neck or head.
• Perform each repetition with slow, controlled movements to maximize muscle engagement.
• Cross your arms over your chest to prevent using them for momentum.

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.