Officials in Grand Teton National Park say they have had to respond to several cases of individuals suffering from dehydration. Often, people do not realize how quickly the heat and low humidity can take its toll on them. Medical experts point out that symptoms generally become noticeable after only 2% of one’s normal water volume has been lost. The prevention of dehydration is easy: drink plenty of water…and no, carbonated or caffeinated beverages and alcohol actually work against you. A leading organization involved in outdoor activities suggests that if the temperature is 78 to 82 degrees, you should drink one pint per hour. If the temperature is 82 to 85 degrees, drink one to 1 ½ pints per hour. If the temperature is 85 to 88 degrees, make that 1 ½ pints to one quart per hour. Above that, you should drink fully one quart of water per hour. Symptoms of dehydration include fatigue, dizziness, nausea, headache shortness of breath and decreased alertness. Anyone experiencing these symptoms should stop activity immediately, drink fluids and seek a place to cool down.