Lie on your back, lift your shoulder blades off the ground, and bring your left elbow toward your right knee, extending your left leg.
Sit on the floor, bend your knees, and lift your feet off the ground. Hold a weight or medicine ball and twist your torso to each side.
Russian Twists: Sit on the floor, lean back slightly, and twist your torso while holding a weight or medicine ball.
Standard Plank: Hold your body in a straight line from head to heels, supporting yourself on your elbows. Side Planks: Lie on your side and support yourself on one elbow, keeping your body straight.
Lie on your back and lift your legs while keeping them straight. Lower them slowly without touching the ground.
Hang from a pull-up bar and lift your legs to a 90-degree angle with your torso.
Hold a weight or medicine ball with both hands and perform a diagonal chopping motion from high to low, engaging your obliques.
Hold a medicine ball above your head and slam it to the ground, engaging your core.
Stand or kneel next to a cable machine with a rope attachment. Pull the rope across your body, rotating your torso.
Lie on a bench or flat surface and hold onto the edge. Lift your entire body, keeping it straight from head to heels.
Lie on your back with your arms extended overhead and your legs straight. Lift your upper body and legs, forming a “V” shape.