A London Marathon runner was left fighting for her life in a coma after drinking too much water during the race. Johanna Pakenham, 53, unknowingly overloaded her body with more than a dozen bottles of water to cope with the heat and has no recollection of crossing the finish line.
The mum-of-four later collapsed at home, suffered a seizure, and her partner was forced to perform CPR to keep her alive before the ambulance arrived. By taking in too much fluid during the race, Joanna had flushed the sodium out of her system, resulting in the life-threatening condition know has hyponatremia. Johanna is now back home, and wants others to be wary of the affects of drinking too much water while running.