Exercises can help with breast reduction and restoring normalcy in your life. A targeted workout will tone the breast muscles and tighten them. Along with firmness, you will also notice a welcome ‘lift’ in your bust that defines your body. Breasts are also a result of hormonal changes in the body. In some women, the breasts become extremely large, causing heaviness and pain. Pressing your body back up and tightening the muscles are two of the breast exercises that will reduce breast size. To tone the breasts and lift them, press your body into the air. The breasts are pressed back.