Serious Hot weather question..

lthough exercising in hot weather can be uncomfortable for some, it does appear to increase calorie burn. When it's hot outside, your heart has to pump harder to cool off the hard working muscles along with the rest of the body. It does this by pumping more blood to the extremities so that the heat can be released in the form of sweat. If you stop to check your heart rate when exercising in hot weather, you'll usually find that it's higher than when you do the same routine under cooler conditions. Since exercising in the heat also places additional stress on the heart, it provides additional cardiovascular and fat burning benefits. Some well trained athletes take advantage of this fact by putting on a sweatshirt or other heavy clothing at the gym to make their workout harder and burn more calories and fat.

Unfortunately, exercising in hot weather is not always the safest option. The body can become overheated quickly, leading to heat exhaustion or even heat stroke. This is why it's important to drink extra fluids when exercising in hot weather. Water may not be the best choice since it doesn't replenish the electrolytes that are lost with heavy sweating. If these aren't replaced, losses of calcium and potassium can lead to painful leg cramps or more serious symptoms such as muscle weakness or an irregular heart rhythm. Exercising in hot weather is not for the untrained athlete.