How to Strengthen the Small Muscles Next to the Bone

  • 9 years ago
How to Strengthen the Small Muscles Next to the Bone. Part of the series: Gym Slim. If you want to strengthen the small muscles next to the bone, you're going to want to work your supraspinatus, among other areas. Strengthen the small muscles next to the bone with help from a certified personal trainer in this free video clip.