Remarkably agonising to release after things get beyond the comfort stage. As if the muscle is now spasm-locked, and getting things to let go is itself painful

Remarkably agonising to release after things get beyond the comfort stage. As if the muscle is now spasm-locked, and getting things to let go is itself painful and hard. (due to kidney stones I'm drinking continuously 1.5l or more p.d. and I don't even pretend to hold it back, if it's a-comin I'm a-goin.)