Reverse Crunches: Lie on your back with your hands placed behind your head or by your sides. Lift your legs off the ground and bend your knees to a 90-degree angle.
Leg Raises: Lie flat on your back with your arms by your sides and your legs extended. Keeping your lower back pressed into the floor, lift your legs towards the ceiling until they form a 90-degree angle with your torso.
Bicycle Crunches: Lie on your back with your hands behind your head and your knees bent. Lift your shoulders off the ground and bring your right elbow towards your left knee while straightening your right leg.
Mountain Climbers: Start in a plank position with your hands directly under your shoulders and your body forming a straight line from head to heels.
Flutter Kicks: Lie on your back with your hands by your sides and your legs extended. Lift your legs off the ground a few inches and alternate kicking them up and down in a fluttering motion.
Scissor Kicks: Lie on your back with your hands under your hips and your legs extended. Lift your legs off the ground a few inches and cross your right leg over your left leg, then quickly switch legs, crossing your left leg over your right leg.
Plank with Leg Lifts: Start in a plank position with your hands directly under your shoulders and your body forming a straight line from head to heels. Engage your core and lift your right leg off the ground, keeping it straight.