Chakra work is not a religious practice, nor is it anti-religious. The 7 chakras are a part of our body whether we are aware of them or not. Just like your appendix or your pituitary gland, there are things that you can do to keep your body healthy that has nothing to do with religious practice. Some of the techniques used to heal our chakras might be considered spiritual, but they are not connected to one deity or sacrilegious in nature.