Lie on your back with knees bent and hands behind your head. Lift your upper body off the ground by contracting your abdominal muscles
Get into a push-up position, but with your weight supported on your forearms instead of your hands.
Sit on the floor with knees bent and feet flat. Lean back slightly, engage your core
Lie on your back with hands behind your head and legs raised in a tabletop position.
Get into a push-up position, then alternate bringing your knees towards your chest as if you were running in place, while keeping your core engaged.
Lie on your back with legs straight and hands under your backside for support. Lift your legs towards the ceiling while keeping them straight, then slowly lower them back down without touching the ground.
Lie on your back with legs extended and hands under your backside for support. Lift your legs a few inches off the ground and alternate kicking them up
Start in a standing position, then squat down and place your hands on the ground. Jump your feet back into a push-up position, perform a push-up.
This content including advice gives generic information only and is in no way a substitute for qualified medical opinion.