Water is vital for our daily life and function. It makes up 70% of our muscle and we can survive only 3 days without it. It is the transport vehicle for digestion and nutrients to the cells within the blood stream and helps regulate blood volume. Water helps regulate body temperature and heat loss, creates tears, and it helps with the synovial fluid that lubricates our joints.
Through the course of a day, the average adult loses 84 ounces (or 2.5 liters). 1.5 liters are lost through urine, the remaining through sweat and breathing. During exercise, we sweat, which is our body’s way of cooling down, thus expending more water. To estimate how much you lose, weigh yourself before and then after your workout. For each pound lost during exercise, it equates to 16 ounces of water. In order to rehydrate, you'll need 16-24 ounces of fluids. If exercising for an hour or les, water is fine. If longer than an hour, in heat, use a sports drink. Not only do sports drinks help provide fluids, they also provide electrolytes and sodium.
There are several signs to alert you to a dehydrated state. Initially it can start with increased thirst, dry mouth, and a sense of being tired. As dehydration levels increase, the symptoms become more severe. Headache and dizziness, fever, rapid heart rate, and lethargy are common and severe signs. Another sure sign of dehydration levels is your urine. A decrease in output, as well as a more yellowish in color, signals greater levels of dehydration.
So when we get dehydrated, there are steps we can do to recover. First and foremost is to stop the activity, and perhaps lay down in a cool shaded place if available, and to naturally rehydrate yourself slowly. Obviously with water, taking small sips, not big gulps as this will induce stomach cramps and nausea. Sports drinks are a great source of electrolytes and sodium, which will need to be replenished. Or you can create your own drink by mixing 1 quart of water, 1/2 teaspoon of salt, and 6 teaspoons of sugar. You can also replenish fluids via food. Yogurt, watermelon and cantaloupe, and bananas are all great forms of food that have a high water content to help you replenish lost water.
As you can see water is very important to our daily life. An increase in activity will lead to an increase rate of dehydration levels. Drink plenty, and stay hydrated my friends!