No, it’s not religious. Lots of guys are concerned that yoga conflicts with their religious beliefs. It’s true that yoga and Hinduism share common themes, but yoga is not Hinduism. And the way that yoga is practiced in a studio isn’t religious. Many classes do incorporate some aspects of spirituality, but if that makes you uncomfortable, then find a class that doesn’t incorporate spirituality. Man Flow Yoga is one type of yoga that is strictly fitness-based. (It’s no different than attending a group fitness class or watching a follow-along workout video on a DVD.)