"From a pelvic floor perspective, the position for peeing in the shower is not conducive to pelvic floor relaxation," Jeffrey-Thomas told Buzzfeed. "AMAB (assigned male at birth) bodies have the prostate to support the bladder, which makes standing to urinate okay, but AFAB (assigned female at birth) bodies—as well as people who have had affirmation surgeries—do not have the same level of support for the bladder. To maintain continence (i.e., not peeing your pants at inappropriate times), the pelvic floor generally wants to remain contracted in a standing or hovering position, so to urinate in those positions, one has to bypass these normal continence mechanisms, which can be problematic down the line."
