Elbow to Knee

What it is

This is a foundational core exercise that targets your abdominal muscles with a rotational crunch. You perform this movement by bringing your opposite elbow towards your knee while lying on your back. It engages your core to stabilize your torso and improve rotational strength. This bodyweight exercise primarily works your abdominals.

Technique tips

• Focus on controlled spinal flexion and rotation, not just elbow contact.
• Exhale as your elbow meets your knee to maximize core engagement.
• Keep your hands lightly cradling your head, avoiding neck strain.
• Actively press your lower back into the floor throughout the movement.
• Control the return phase; do not let gravity drop your upper body.

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.