It seems to me that Yoga is quite popular among many people. However, as Christians, we are often warned about the integral connections Yoga has with Eastern spirituality. This is important because it can take us away from God, rather than making us closer to Him. Some experts discuss how Yoga can be a doorway into New Age or occult practices.
I came across
this article which gives five alternatives for people who want the physical benefits of Yoga without the concern of going down a spiritually destructive path. The article offers:
Prayer Motion