 The greatest time to do that is after a lift. So you say you go hit your lift, one hour, you tear down those muscles. You need to start repairing those as fast as you can, and those heat shock proteins are going to be produced by the heat in your body, and you're going to go to those damaged muscle tissues and start repairing them. And literature shows that it can boost muscle growth by 15%, which is a lot in the grand scheme of things.