Why when you are about to reach a toilet the necessity of urinating increases so much?
462167
Your bladder has a capacity of 500ml. However you only can store up to 350ml. The increase in capacity is detected be the stretching bladder wall and is detected by nerves. So this causes the sphincter at the base of the bladder to relax. This is a reflex action. But you still have your urethral sphincter under concious control. So you still don't pee until you want to. males are better able to hold their pee because the have a  more prominent urethral sphincter. As you go to relieve your selves, Your body starts to anticipate and your brain tells your abdominal muscles to contract and your pelvic diaphragm to relax. That's why you feel like peeing.
618190
Hmm...I'm not sure, but I think it has something to do with wiping backwards.\nA gross question, but still interesting.
962375
Ohhhh...I got one.  My husband will flush the toilet the SECOND he STARTS to pee.  He'll pee into the swirling water as the toilet is flushing.  As a result, sometimes he isn't done peeing until after the toilet begins to fill up again.  GROSS!!!!  Drives me CRAZY!!!  (Of course, I still love him to death.)
522406
It is because the urethra (the pee tube) exspans to release the bladder.
956866
If you drink 2 liters a day and it takes 25 minutes for your bladder to fill up. You should be visiting the bathroom twice or maybe abit more. Your body temperature also has role in emptying your bladder.And also if your diabetic you tend to lose more fluids rather quickly.Finally stop thinking about the bathroom,you  just might end up going there more often.\nP.S I don't even know what I am talking about
820642
Because in the Summer your body is hot and needs more liquids.  It uses up what it needs and then excretes the extra, through peeing or sweating.  In the Summer you probably sweat more so more of the extra stuff is excreted that way.
472651
however small the fetus is,it put pressure on the bladder that make frequent urination.(because it narrowed the size of the bladder,which make it fast to get full )
327999
Because you have trouble urinating when other people are around....
1159021
It's much harder to control your bowel movement than your urinary release because in your rectum you have the external sphincter (which is voluntary) and the internal sphincter (involuntary), the space in between them is not alot of space and therefore the need to empty it is greater due to the involuntary sphincter.  in the urinary tract, the release is almost completely voluntary!
721993
My son is a diabetic, when his blood sugar levels are normal and not running high he urinates just as much as a non-diabetic, when his blood sugars are running high he can urinate as often as every 5, 10 or 15 minutes. High blood sugars cause diabetics to drink more hence the fact they need the toilet more.  Hope this helps!
671669
It came from England, bobby.  When women first started getting jobs on sailing ships, the sailors needed a polite way to say "I have to urinate". Since the bathroom cost two cents ( two pennies, or 2P), in those days sailors politely informed each other "I have 2P".
544079
When you are pissing, use your muscles to stop the flow in mid stream, then let it go again.  That'll build your strength up .
241650
Good question.  Generally this is because your bladder gets full and an erection is the way your body helps hold it in.\n\nOf course it's a pain when you get up and try and figure out a way to urinate with that erection ...
1170942
It could mean you have been drinking more than you usually do.\n\nIt could also mean that you have a bladder infection.  It does not always have to burn when  you pee to have one.\n\nIf it continues then you should talk to your parents (if you are young) or your doctor to run a test to see if you do have an infection.\n\ngood luck!
827058
Your bladder is like spouses and children. It is activated by a button on your a*s. As long as you are standing around doing nothing, you are safe from disruptions. Sit down and, well, you push the button! It can also activate the phone, door bell and In-Laws. You can't fight it man. All you can do is try to ignore it but that will only last a short time. Sorry dude, welcome to life on planet Earth!  lol
1029965
It occurs when pressure is put on the bladder.  The pressure can be from lifting something too heavy, repeatedly standing for too long, coughing, sneezing and laughing.  And if you're a woman, pregnancy and childbirth can cause it.
12413
This depends on a number of factors. One of the factors is the pressure from the bladder through the urethra. Another factor is the strength of the pubococcyl muscle which controls the start and stop of urinary flow.