Muscles Worked: Abdominal muscles, back muscles.
Starting Position: Sit on a carpet or a floor mat with your heels on the ground and your knees bent. Extend your arms directly out in front of you.
Action: Slowly lower your upper body half way to the ground without letting your heels come off the ground. Hold this position for a determined amount of time.
Raise your upper body back to the starting position without letting your heels come off the ground.
Back and Forth Lunges: Body Weight Only
Lunges: Body Weight Only
Push Ups: Body Weight Only
Squat with Calf Raise: Body Weight Only
Squats: Body Weight Only
Jog in Place
Side Seated Leg Lifts
Move your heels further away from your glutes to make the exercise easier.
Move your heels closer to your glutes to make the exercise harder.
Hold a weight against your chest to make the exercise harder.