Why do people need to urinate so much at night time ? Answer from Cardiac Doctor = Gravity holds water in the lower part of your body when you are upright (legs swell). When you lie down and the lower body (legs and etc) seeks level with the kidneys it is then that the kidneys remove the water because it is easier.
Correct time to drink water... Very Important. >From A Cardiac Specialist!
Drinking water at a certain time maximizes its effectiveness on the body: