Draw the elbows quickly backward.
Carry a weight in each hand, holding the weight behind you and out from the body.
Hold the body in the correct attitude ([see page 132]), head balanced on spine, chest elevated, posterior part of body thrown out, weight on balls of feet, not on heels.
Exercises that strengthen the waist muscles will help to maintain the erect position, and so tend to overcome round shoulders.
To Strengthen Weak Back.
1. Hold a light weight in each hand. Place the weights on the floor in front of you. Stand with feet eight inches apart, and take three slow, deep breaths. Stoop over and take the weights in the hands and gradually straighten up till the hands hang easily at the sides. Bend slowly forward, and again place the weights on the floor. Repeat five times.
2. Clasp the hands back of the neck and bend slowly forward until the head is on a level with the waist. Count ten, then straighten up to erect position. Repeat.
3. Bend the body backward, forward and sidewise at the waist.
4. Put your right arm over your head till it touches your left ear. Hold the chin high. Breathe slowly and deeply while you walk around the room. Repeat with other arm. Increase the length of your walk gradually.
5. Playing tennis is good exercise for the sides of the waist.