We must remember that our body is designed in such a way that it allows for inner healing. Yoga is just an approach people use. Yes, a lot of the steps originated in India, but when I sit in meditation (or in silence), my body will move by its own accord when there is an ache somewhere. Just a simple stretch can remove the ache.
We are all made in God's image. How we see God is how we see ourselves. God is alive everywhere in everything. God is presence. God is now. Believe in it and it heals you.