Marathoners Warned About Too Much Water

People are always being warned about dehydration, but actually, the real danger is over-hydration.

‘There are no reported cases of dehydration causing death in the history of world running… But there are plenty of cases of people dying of hyponatremia.’

In general, if you drink when you feel thirsty, you should be okay. And for people in marathons, the experts advise not to drink more than a cup of water every 20 minutes.