Extreme Heat- What to Drink ?

Extreme Heat- What's Best to Drink
It's important to drink water during times of heat and activity. However, if you are an athlete doing prolonged exercise in the heat and gulping down lots of water, there is another risk to consider.
Hyponatremia, also called water intoxication, is when a person literally drinks too much water, too quickly. This over-dilutes the sodium in your blood. Warning signs include nausea, muscle cramps, slurred speech, and confusion. For hours of exertion in the heat, a sports drink, which replaces sodium and other electrolytes, is a better choice than plain water. If, however, you are out for a 20- to 30-minute walk, water is best.