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.
A Dr. Jill Rabin , OBGYN (Obstetrics & Gynecology), answered. The bladder can hold anywhere between twelve and twenty ounces of fluid, depending on the age of the person. Bladder capacity tends to decrease with age and leads to an increased frequency of urination. It is not uncommon to feel the urge to urinate when the bladder holds just eight ounces of urine, and the bladder is generally emptied when it contains anywhere up to sixteen fluid ounces.