ProbioLite - If kid has a bigger ball around, you can lie on face value and arch your back using the ball as being the balance. Feel every muscle of the system as you do these physical activity. You can also use a chair as well in these exercises. Using it as a balance, place stretch your back your muscles. Make sure you have no back problems before you do these. Yoga exercises are not intended to be strenuous exercises. Always remember to relax infrequently.