A normal bladder empties 4 - 7 times each day depending on how much you drink and holds up to three-quarters of a pint.(450lm) It usually starts to tell you that you will need to go to the toilet soon when half this amount is in your bladder. For example, you may wake up once or twice to pass water and your bladder will tell you when it is full but gives you enough time to find a toilet. A normal bladder empties completely every time you pass water and does not leak.
Try to drink at least 2 to 3 pints (1.2 litres) of fluid each day - remembering that many foods already contain plenty of water in them. If you currently drink less than this, try and increase the amount you drink gradually. Drink fairly small quantities at any one time, regularly throughout the day.