Lie back on the bench with your legs extended in front of you off the end. Use your hands to grip the bench and steady yourself. Place your hands either under your glutes with your palms down or by ...

Sit on the bench with your legs extended in front of you and lean back slightly at a 45 degree angle. from the bench. Flex at the knees and tense your abs to bring your legs up towards your chest.

(a) Lie face up on a bench (or across a few chairs if you're at home) with your back and bum supported, legs extended off the end and hands gripping the bench behind your head. (b) Lift your legs up ...