It's been a while since I've had conditions where sleeping isn't against the rules - starving & overexertion is common. I'm often in extreme bodily tension, where moaning or screaming from pain is unavoidable. I find that moaning during exhales helps vibrate the tension from the inside out, especially when I'm too tired to e.g. self-massage. It isn't unusual for the tension to get extreme to where screaming from pain for stretches of times isn't avoidable. I find that varying pitch & volume can affect some where in the body it vibrates.