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While on your knees, place your hands on a medicine ball on the ground in front of you. Push yourself up on the medicine ball with your hands, and place your feet slightly apart while balancing on your toes. Hold the position, keeping your neck, head, and back aligned, for 10 seconds. Try to build yourself up until you're able maintain this position for 30 seconds. Sit on the ground with your legs and feet in front of you, then lift your feet off the ground until you're holding them slightly suspended in the air. Choose a medicine ball that's an appropriate weight and hold it in your hands. Keep your feet elevated, rotate your shoulders to the right, and touch the medicine ball to the ground on your right side. Repeat the movement to your left side. Move the medicine bal from side to side for 20-30 repetitions. Repeat 5 times on each side, then relax. Stand near a strong wall with your feel hip-width apart. Put your left foot about 1 foot (0.30m) in front of your right foot. Hold the medicine ball in both hands with your arms slightly bent, and swing the ball over your right hip towards the wall. Catch the ball when it bounces back, and repeat the movement at least 4 more times. Then, perform the exercise on the other side. Stand up straight with your feet beside each other and your knees slightly bent. Hold the medicine ball in both hands, bring it back above and behind your head and then throw it towards the floor as hard as you can. Catch the ball when it bounces back and repeat the movement at least 4 more times. Imagine you're holding a watermelon or pumpkin and are trying to smash it. Hold the exercise ball in your hands directly in front of you. Keep your back straight, bend your knees until your thighs are parallel with the ground, and reach your arms out straight in front of you. Hold the position with the ball in front of you for 3 deep breaths, then stand up. Place the exercise ball on the ground, then lie down on top of it with your feet and hands touching the ground. The exercise ball will be under your belly. Walk forwards on your hand, rolling on the ball, until the ball is under your thighs. Keep your arms aligned with your shoulders while you hold yourself up. Hold for as long as you can, then repeat 4 more times. For an extra challenge, roll slightly forwards once you're in position so that the ball moves under your shins, instead of your thighs so your shoulders are in front of your hands. Lie on your stomach on an exercise ball, with your hands and feet touching the ground. Walk forward on your hands until the exercise ball is under your thighs. Your shoulders and hands should be aligned. Move your legs so that your knees are on the exercise ball, instead of your thighs and you're kneeling on the ball with your hands on the floor so you're tilted downwards. Use your abdominal muscles to bring your knees towards your chest and hold for 3 breaths. Repeat 4 more times. Sit on the exercise ball, with your feet flat on the ground in front of you. Your knees should be bent at a 90 degree angle, and your back should be kept straight at all times. Place your arms across your chest and tighten your abdominal muscles. Lean backward and hold the position for 3 deep breaths to allow the weight of the exercise ball to add extra stress to your abdominal muscles. Repeat at least 4 more times. Lie on a mat, on your back, with your shins on top of an exercise ball. Place your hands, palms down, to your sides. While holding your abdominal muscles tight, raise your hips until your legs, body, and shoulders are a straight line. Hold for 3 deep breaths and relax. Repeat 4 more times. To add an extra component to this exercise, raise 1 of your legs at a time while in the lifted position and hold for 3 deep breaths. For an even greater challenge, place your heels on the exercise ball, instead of your shins. Lay on a mat, on your back, with your legs resting on an exercise ball. Move your legs so they're about hip-width apart and then squeeze your legs together so they grip the ball between them. While holding your abdominal muscles tight, lift the ball up off the ground and hold for 3 deep breaths, then relax. Repeat 4 more times to allow the added weight of the exercise ball to strengthen your abdominal muscles. To increase the challenge of this exercise, rotate your legs to the right or left while you're holding the ball in the air, and hold for 3 deep breaths. Don't rotate your legs too far, just enough to feel the pull of your core muscles. Lie on a mat on your right side and put the exercise ball between your legs. Prop yourself up on your right forearm. While holding your abdominal muscles tight, and keeping the ball between your legs, lift your legs up off the floor. Hold in that position for 3 deep breaths, using the exercise ball to challenge your muscles, then relax. Repeat 4 more times on your right side, then switch and do the same thing on your left side.
Perform the medicine ball plank to increase core stability. Do seated Russian twists build up your oblique muscles. Bounce a medicine ball off of a wall and catch it to work your core. Slam the medicine ball on the ground to build explosive muscle. Squat while you're holding an exercise ball to build muscle and burn fat. Perform walking planks with a medicine ball to engage your core. Try a reverse crunch with an exercise ball. Do abdominal crunches with an exercise ball. Attempt the bridge exercise on an exercise ball. Raise an exercise ball with your legs to work your ab muscles. Do oblique crunches with an exercise ball.