Abs workout routine

Lie on your back with your legs bent, heels under knees, feet flat on the floor.

Extend your arms over your chest, palms facing.

Raise your hips so your body forms a straight line from your shoulders to your knees.

Brace your abs and lift your right knee over your hip, maintaining 90-degree angle of that leg.

Hold for a moment, then lower your right foot.

Repeat with the left. That's 1 rep.