By that reasoning any physical fitness program would be at odds with Christianity.
No, Yoga was never intended by the Indian mystics who popularised it in the 60’s to be merely a exercise program but a way to subtily introduce hinduism and other facets of Hinduisn to the west. They were subtle though in calling it an “exercising of the mind, body and spirit, but in reality it promoted the notion of a unity and oneness of all things, that you are your own God. The guru’s practised their own special version of TAQQAIYAH just like “religion of peace”.