BLADDER HEALTH
Last Updated: September 22, 2026
Normal Function of the Bladder
Emptying the bladder (peeing/voiding) occurs through a complex system of reflexes. As the bladder fills, pressure inside of the bladder increases and signals are sent to your brain to let you know that it is time to pee. Once you sit on the toilet and allow your pelvic floor muscles to relax, a signal is sent to the bladder muscle (the detrusor) that lets it know to begin contracting (to push pee out). In a normal functioning bladder, this should occur 4-8x/day or every 2-5 hours, except for at night. At night, the production of urine slows down, allowing you to get adequate sleep.
Normal Values
-
Average bladder capacity is 400-600 mL (14-20 oz.) Some people may think they have a “small bladder”, but it is more likely that over time they have accidentally trained their bladder to think it needs to empty before it is full.
-
Normal frequency at night is 0-1 time for people under 65; 1-2 times for those over 65.
-
Post void residual (amount remaining in the bladder after you pee) is 30-100 mL. This is important to understand why restricting fluids is not helpful for people with stress urinary incontinence (leaking with coughing, sneezing, jumping, lifting, etc.) and why they may continue to leak even right after they pee.
Practice Good Bladder Habits
-
Avoid delaying using the bathroom for more than 5 hours.
-
Sit on the toilet. DO NOT hover. Hovering prevents your pelvic floor muscles from relaxing and can interfere with the reflex system that keeps your bladder functioning properly.
-
DO NOT push out your pee. The bladder is a muscle and does this for you. All you need to do is sit down and relax.
-
Take your time. Do not try to rush to get off the toilet before your bladder fully empties.
-
Do not go to the bathroom “just in case”. Over time, the bladder may begin to signal a need to urinate before it reaches its full capacity.
-
Drink plenty of water. Restricting fluid intake does not help with incontinence! If urine becomes too concentrated, it can irritate the bladder and lead to increased urge or frequency. As a general rule of thumb, try to consume half your body weight in ounces. For example, if you weigh 140 lbs. this would be 70 ounces a day. Pregnant and breastfeeding women need more than this.
-
If you wake up often to pee in the middle of the night, try restricting fluid intake 2-3 hours before bedtime.
-
If you pee more frequently than what is considered normal, try limiting the consumption of bladder irritating foods and beverages such as caffeine, alcohol, carbonated beverages, processed foods, acidic foods, and artificial sweeteners.