how to straighten out your shoulders
1 Head and neck: Make sure that your head extends straight up from your shoulders. 2  Many people tend to lean their head forward. 3  If your ears line up with the front of your chest, you need to pull your head back. 4  Shoulders, arms, and hands: Your arms and hands should fall on the side of your body. Many people tend to lean their head forward. 2  If your ears line up with the front of your chest, you need to pull your head back. 3  Shoulders, arms, and hands: Your arms and hands should fall on the side of your body. 4  If so, your shoulders are exhibiting good posture.