Summary: The Brittle Bone Disease... As we age we lose bone, especially in the upper back. You can strengthen the muscles in the upper back, not only will your bones get stronger, but you'll look better in that swimsuit or tank top.
Summary: The Brittle Bone Disease... As we age we lose bone, especially in the upper back. You can strengthen the muscles in the upper back, not only will your bones get stronger, but you'll look better in that swimsuit or tank top.