Scientists Reveal Why You Should Pee for 21 Seconds

Scientists say you should try to spend about 21 seconds when you pee. This “21-second wee rule” helps you empty your bladder fully and keep it healthy.

Researchers at the Georgia Institute of Technology studied videos of animals urinating. They found that most animals take around 21 seconds to empty their bladders. The time is linked to gravity and the length of the urethra, which affects how fast urine flows out.

The scientists explained that even large animals empty their bladders in almost the same time as smaller animals because their longer urethras increase flow speed.

While you don’t need to time every bathroom visit, aiming for about 21 seconds is good for your bladder.

If you take much longer than 21 seconds regularly, or if you hold your pee for a long time, you may face health problems. Holding urine can stretch your bladder too much and reduce its function.

Holding pee also allows bacteria to grow, which can cause urinary tract infections (UTIs). In rare cases, holding urine too long can cause the bladder to rupture, a serious condition that can be life-threatening.

Experts advise listening to your body, not holding urine for too long, and taking enough time to fully empty your bladder.