Whether you're taking a brisk walk or running a 26 mile marathon, sports hydration and stretching are extremely important to preventing injury and to maintaining optimum fitness. However, there are many myths about both these things that have crept into most people's thinking.
The number one myth about hydration is that you should let your level of thirst signal when you need to drink. This is absolutely untrue. Most athletes only replace about 2/3 of the water they lose when they follow this rule. Instead, drink fluids on a schedule. A general rule of thumb, depending on your weight and weather conditions is to drink 8 ounces of water about 15 minutes before beginning exercise and 8 ounces for each 15 minutes during your workout.
Another sports hydration myth is that everyone needs eight glasses of water a day. This may not be enough for some people who engage in higher intensity sports. It may be too much for sedentary people. This is because, although it is true that the average person loses 80 ounces of water a day, he or she also gains about 32 ounces of water from food. That means, in order to replace lost fluids a person only needs to drink about 48 ounces of water rather than the 64 ounces contained in eight glasses of water.
A recent study about over sports hydration has scared people into believing that you can get sick from drinking too much water during exercise. While this may be true in isolated cases, typically among endurance athletes, the average person will not get sick from drinking too much water unless they have an existing heart, liver or kidney problem. If you have one of these conditions, checking with your doctor about the proper amount of liquid to drink during exercise is advisable
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