Others here have given some good methods. I should clarify that I can't do it on command, but rather, I can encourage it with a good degree of success. It leav

Others here have given some good methods. I should clarify that I can't do it on command, but rather, I can encourage it with a good degree of success. It leaves you really tired the next day, so it's but something I typically do more than once a week or so.