A Pilates exercise on the exercise ball that will strengthen the back, legs, glutes and arms plus requires balance and a little bit of coordination.
How to do this exercise:
Lie on an exercise ball with your hips and thighs on top of the ball, legs extended and arms, hands underneath shoulders. Bring belly in and inhale.
Flutter kick your legs and exhale for a few seconds as you are doing so. Inhale and keep flutter kicking your legs for a few more seconds. Repeat this exercise for a 2 to 3 times.
Note that this exercise can be done on a mat if you have difficulty with using a fitness ball or you don't have one.
My Swimming Pilates Exercise HD video on the fitness ball will demonstrate how to do this exercise: