Plank: Get into a push-up position, but with your weight on your forearms instead of your hands. Keep your body in a straight line from head to heels, engaging your core muscles.
Russian twists: Sit on the floor with your knees bent and feet lifted off the ground. Lean back slightly and clasp your hands together.
Leg raises: Lie on your back with your legs straight. Lift your legs towards the ceiling, keeping them straight, then slowly lower them back down without letting them touch the floor.
Mountain climbers: Start in a plank position, then quickly alternate bringing each knee towards your chest. Keep your core tight and your back flat throughout the movement.
Bicycle crunches: Lie on your back with your hands behind your head. Lift your shoulders off the ground and bring your right elbow towards your left knee while straightening your right leg.
Flutter kicks: Lie on your back with your hands under your glutes for support. Lift your legs off the ground a few inches and alternate kicking them up and down in a fluttering motion.
Plank with leg lift: Get into a plank position and lift one leg off the ground, keeping it straight. Hold for a few seconds, then switch legs.
Workout: Lie on your back with your arms extended towards the ceiling and your legs in a tabletop position.
Dead bug: Lie on your back with your arms extended towards the ceiling and your legs in a tabletop position.
V-ups: Lie on your back with your arms extended above your head and your legs straight. Lift your upper body and legs off the ground, reaching your hands towards your feet.