Classic and effective for targeting the rectus abdominis (the "six-pack" muscles). Lie on your back, knees bent, hands behind your head or crossed over your chest.
Hold a push-up position with your body straight from head to heels, supporting yourself on your forearms and toes.
Targets the lower abs. Lie flat on your back and lift your legs up towards the ceiling while keeping them straight.
Engages the obliques. Sit on the floor with knees bent, lean back slightly, and twist your torso from side to side while holding a weight or medicine ball.
Works the entire core and obliques. Lie on your back, bring your knees up, and alternate touching your elbows to the opposite knee while extending.
dynamic exercise that engages the core and improves cardiovascular fitness. Get into a plank position and alternate bringing your knees towards your chest.
Targets the lower abs and hip flexors. Lie on your back, lift your legs a few inches off the ground, and alternate kicking your legs up and down in a fluttering motion.
Focuses on the lower abs. Lie on your back, lift your legs off the ground, and bring your knees towards your chest while lifting your hips off the floor.
Requires a pull-up bar or similar equipment. Hang from the bar and lift your legs straight up towards your chest, engaging your core throughout the movement.
Strengthens the core and improves stability. Lie on your back with arms extended towards the ceiling and knees bent at 90 degrees.