Lay down with your back on the ground and your knees bent and pointed towards the ceiling. With your arms on your side raise your shoulders slightly off the ground. Using your abs rotate your right hand down to your right foot and then back up. Then do the same thing with your left hand. Alternate back and forth for the desired amount of repetitions.

Lie flat on the floor and interlock fingers behind your head. Bring your right knee to your chest and touch your left elbow to it. Alternate the crunch by touching the other knee with the opposite elbow.

lying on your back, lift both feet slightly off the floor. Alternate the legs in short up and down movements like a flutter kick pattern

Lie face down on your belly with your palms on the floor underneath your shoulders and your feet flexed with the bottoms of your toes on the floor. Take a deep breath and press through your palms to lift yourself up into the top of a push-up position or onto the forearms. Your body should make a straight line from your heels through your hips to the top of your head. Draw your navel toward your spine and squeeze your glutes. Look at the floor directly below your head to keep your neck in a neutral position, and breathe normally. Hold for time given and lower yourself back to the floor.