Plank: Start in a push-up position with your hands directly under your shoulders. Engage your core and hold your body in a straight line from head to heels.
Russian Twists: Sit on the floor with your knees bent and feet flat. Lean back slightly and lift your feet off the ground, balancing on your sit bones.
Flutter Kicks: Lie on your back with your hands under your hips for support. Lift your legs off the ground a few inches and alternate kicking them up and down in a fluttering motion.
Bicycle Crunches: Lie on your back with your hands behind your head and legs lifted in a tabletop position. Bring your right elbow towards your left knee while extending your right leg straight.
Leg Raises: Lie on your back with your legs straight and arms by your sides. Keeping your lower back pressed into the floor, lift your legs towards the ceiling until they are perpendicular to the ground.
Mountain Climbers: Start in a high plank position with your hands directly under your shoulders. Drive your knees towards your chest, alternating legs in a running motion.
Dead Bug: Lie on your back with your arms extended towards the ceiling and legs lifted in a tabletop position. Slowly lower your right arm and left leg towards the floor, keeping your lower back pressed into the ground.
Reverse Crunches: Lie on your back with your knees bent and feet flat on the floor. Place your hands by your sides for support.
Side Plank: Start in a side plank position with your elbow directly under your shoulder and feet stacked on top of each other.
Bird Dogs: Start on your hands and knees with your wrists directly under your shoulders and knees under your hips.