Lie on the ground face down and prop yourself up on your hands or elbows, then push yourself up on your toes. Make sure your body is off the ground, but keep those hips low to the ground. Your body should maintain a level elevation. Sounds easy, huh? Try holding it for 30 seconds and you'll really feel the burn in your butt and abs. When 30 seconds becomes easy, work your way up to 1 minute, 2 minutes, even 5 minutes for an intense workout.