TO KEEP YOUR BACK STRAIGHT
If possible, exercise in front of a mirror to control your movements. Repeat each exercise as many times as your strength allows you to. If you don’t over-exercise your body today, you will be able to make a few more repetitions tomorrow.
Stand straight against the wall with your back placed as close as possible to the wall. Make sure that your head, back and legs are precisely adjacent to the wall.
Straighten up and place a book on your head, then go ahead lifting your knees high and try to keep the book on your head.
Place a book on top of your head, straighten your arms in front of you and start to walk so that the book does not fall off your head.