Bicycle Crunches: Lie on your back, lift your legs, and bring your right elbow to your left knee. Repeat on the other side.
Plank: Hold your body in a straight line with your forearms and toes on the ground.
Russian Twist: Sit on the ground with your knees bent and feet flat. Lean back slightly and twist your torso from side to side.
Reverse Crunch: Lie on your back with your legs in the air. Lift your hips off the ground and bring your knees towards your chest.
Side Plank: Hold your body in a straight line with one forearm and the side of your foot on the ground.
Mountain Climbers: Start in a plank position and bring your knees towards your chest one at a time.
Flutter Kicks: Lie on your back with your legs straight. Lift your legs off the ground and alternate kicking them up and down.
Dead Bug: Lie on your back with your arms and legs in the air. Lower your opposite arm and leg towards the ground and repeat on the other side.