Lie on your back with your knees bent and feet flat on the floor. Spread your arms so that they rest on the floor at about shoulder level, palms facing up. Now press your heels into the floor to raise your hips so that your body forms a straight line from your shoulders to your knees. Brace your abs and squeeze your butt cheeks like tight fists. This is the starting position.
Keeping your abs and glutes tight, lift your left knee toward your chest. Hold for a count of two and then lower that foot back to the floor. Next do the same with your right leg. A left and right march equals one repetition. Do eight to 12.