Actually I could feel it. Even when just dipping in my hand to swirl the water to the right temperature, I could feel the slight achiness in the hand I mentioned earlier. When in the bath I had that achiness and some slight pains in my feet and upper back. I have been having trouble with my feet the last few months - poor genetics, low arches and naturally malformed a bit, and I am starting to have trouble if I don't wear really good shoes. Nonetheless, I had some pain in my feet. The upper back thing - not sure what that is. The only thing I can think is that I suspect hookworms in the lungs. When doing other parasite cleanses in the past, I have had some heart/lung pain during the cleanse. I am wondering if this is the same.