If you’ve ever taken a yoga class, been treated with acupuncture, visited a chiropractor or relaxed with a shiatsu massage, then you actually practiced a certain kind of religion, even if you weren’t aware of it. At least, that’s according to Candy Gunther Brown. She says metaphysical ideas behind popular health therapies - like the idea that our bodies are ruled by a 'life force' -  might be challenging your world view for the worse.