ultra-endurance

Hyponatremia occurs where sodium levels in the blood become dangerously low due to excessive water consumption.  Blood sodium levels that drop too low can lead to seizures, coma, and even death.  To prevent hyponatremia usually occurs in endurance and ultra-endurance events follow these guidelines.

Hyponatremia is a relatively rare form of heat illness in which sodium levels in the blood become dangerously low due to excessive water consumption.  It usually occurs in endurance and ultra-endurance events lasting four hours or longer. While children do not ordinarily participate in these kinds of activities, hyponatremia is so dangerous that it something sports parents should know about.