The following article appeared in the May 2007 issue of UltraRunning Magazine.Over the last 12 years, ultra-endurance athletes such as ultramarathoners and adventure racers have become more aware of the need for water and electrolyte balance during t…

Advice based on experience by Karl King. Karl isn't a physician, registered nurse or emergency medical technician. But as a veteran long-distance runner and director of races five kilometers runners suffering and staggering along wilderness trai…

As published in the March 2007 issue of UltraRunning Magazine. For many years, the focus for hydration in endurance running has been on drinking enough because of to become dehydrated in the heat because common sweat rates of 1 to 3 liters/hour…