The human body is made to move, and in order to move, we need the use of muscles and bones in order to move. The bones provides the structure, and the muscles help out with the movement. Working together, they help the body function and move. In running, they support each other and allow the body to work.
Today, I went to the gym and enjoyed a nice workout. I warmed myself up with 14 pull ups and 30 push ups and also 50 sit ups (on one of those incline bench things). In an hour of cycling, I went 21.6 miles, and after taking a little break, went and cycled another 30 minutes, finishing it off with 200 step up/high knees. After 10 minutes of loosening up in the sauna, I went home, ate... and then slept. Overall, it was a wonderful day. I was able to work on my muscles without putting too much pressure on the bones.
Bones support the body and helps it structurally, but when it comes to motion, the muscles are what pushes things forward. The more the muscles work together, the more efficiently the body can go. The less the muscles work together, the more likely the body will get damaged, and the toll will be taken on its joints.
Proper support means there is proper balance, and when we focus on supporting ourselves, we support not only to prevent injuries but also to maximize the results.