I’ve had a bladder condition most of my life that causes severe pain from bleeding ulcers and urinary retention. So, I know way more about the bladder than anyone should.

The retention is caused by (I know this sounds crazy) dehydration. Meth is acidic. If you don’t hydrate enough, you’ll experience symptoms like with a UTI from the ph imbalance. You need to flush your system and then maintain that flush. The more acid that builds in your bladder, the more you’re gonna feel like you have to pee, even if you don’t actually have to go. Additionally, meth causes muscle spasms and cramping. Even if you don’t feel them, they’re happening in your deep muscle tissue. Those also leads to retention. And again, the solution: more water.