However, Dr Potter points out that drinking water immediately before bed can disrupt your night. “It can increase the urge to urinate during the sleep period, a phenomenon known as ‘nocturia’. Certain people are especially prone to this, for example, those with smaller bladders than others.

“Another cause of nocturia is dysregulation of one’s body clock. This clock usually drives changes in hormones such as arginine vasopressin that result in slowed urine production at night, but clock dysfunction can lead to continued high rates of urine production at this time.”

He recommends that if you find you have to get up to pee multiple times at night, you might want to restrict your fluid intake, and particularly your intake of diuretics such as alcohol and caffeine, in the hours before you go to bed. But more importantly, you want to have healthy sleep and morning routines to regulate your rhythm so that a glass of water before bed doesn’t keep you up at night.

Drinking water before bed might help you sleep better, age better and boost your energy levels