A 2004 study also found medical residents with less than four hours of sleep a night made more than twice as many errors as residents who slept for more than seven hours a night, an especially alarming trend given that less than 11% of surveyed residents were sleeping more than seven hours a night.
Best Answer: A normal adult bladder can hold anywhere from 16 to 24 ounces (about 500 to 750 mL) before the urge to urinate becomes overwhelming. Everyone's bladder is different though, so some can hold more than that amount, some less.
view full size image a healthy adult bladder can hold up to 16 ounces 2 cups of urine comfortably according to the national institutes of health how frequently it fills depends on how much excess water your body is trying to get rid of circular muscles called sphincters close tightly to keep urine from leakingiew full size image a healthy adult bladder can hold up to 16 ounces 2 cups of urine comfortably according to the national institutes of health how frequently it fills depends on how much excess water your body is trying to get rid of circular muscles called sphincters close tightly to keep urine from leaking