In addition to being an important part of the fluids in your body, each cell depends on water to function normally.
Without water, your body would stop working properly. Water makes up more than half of your body weight and a person can't survive for more than a few days without it. Why? Your body has lots of important jobs and it needs water to do many of them. For instance, your blood, which contains a lot of water, carries oxygen to all the cells of your body. Without oxygen, those tiny cells would die and your body would stop working.
Your body works best when its temperature is about 98.6ºF (37ºC). When your body gets hotter than that, your brain doesn't like it — it wants your body to stay cool and comfortable. So the part of your brain that controls temperature, called the hypothalamus (say: hy-po-thal-uh-mus), sends a message to your body, telling it to sweat.
Then special glands in your skin called — what else? — sweat glands start making sweat. Sweat is also known as perspiration (say: pur-spuh-ray-shun), and it is made almost completely of water, with tiny amounts of other chemicals like ammonia (say: uh-mown-yuh), urea (say: yoo-ree-uh), salts, and sugar. (Ammonia and urea are left over when your body breaks down protein.)
The sweat leaves your skin through tiny holes called pores. When the sweat hits the air, the air makes it evaporate (this means it turns from a liquid to a vapor). As the sweat evaporates off your skin, you cool down.
Sweat is a great cooling system, but if you're sweating a lot on a hot day or after playing hard you could be losing too mu
Water serves as a lubricant in digestion and almost all other body processes. The water in our saliva helps facilitate chewing and swallowing, ensuring that food will slide easily down the esophagus. Water also lubricates our joints and cartilages and allows them to (pardon the pun) move more fluidly. When dehydrated, the body rations water away from the joints. Less lubrication equals greater friction and that can cause joint, knee and back pain potentially leading to injuries and arthritis. Even our eyeballs need plenty of lubrication to work well and remain healthy.
ch water through your skin. Then you need to put liquid back in your body by drinking plenty of water so you won't get dehydrated (say: dee-hi-drayt-ed).
What happens to the water we drink?
In addition to being an important part of the fluids in your body, each cell depends on water to function normally.
Without water, your body would stop working properly. Water makes up more than half of your body weight and a person can't survive for more than a few days without it. Why? Your body has lots of important jobs and it needs water to do many of them. For instance, your blood, which contains a lot of water, carries oxygen to all the cells of your body. Without oxygen, those tiny cells would die and your body would stop working.
Your body works best when its temperature is about 98.6ºF (37ºC). When your body gets hotter than that, your brain doesn't like it — it wants your body to stay cool and comfortable. So the part of your brain that controls temperature, called the hypothalamus (say: hy-po-thal-uh-mus), sends a message to your body, telling it to sweat.
Then special glands in your skin called — what else? — sweat glands start making sweat. Sweat is also known as perspiration (say: pur-spuh-ray-shun), and it is made almost completely of water, with tiny amounts of other chemicals like ammonia (say: uh-mown-yuh), urea (say: yoo-ree-uh), salts, and sugar. (Ammonia and urea are left over when your body breaks down protein.)
The sweat leaves your skin through tiny holes called pores. When the sweat hits the air, the air makes it evaporate (this means it turns from a liquid to a vapor). As the sweat evaporates off your skin, you cool down.
Sweat is a great cooling system, but if you're sweating a lot on a hot day or after playing hard you could be losing too mu
http://www.freedrinkingwater.com/water-education/water-health.htm
Water serves as a lubricant
Water serves as a lubricant in digestion and almost all other body processes. The water in our saliva helps facilitate chewing and swallowing, ensuring that food will slide easily down the esophagus. Water also lubricates our joints and cartilages and allows them to (pardon the pun) move more fluidly. When dehydrated, the body rations water away from the joints. Less lubrication equals greater friction and that can cause joint, knee and back pain potentially leading to injuries and arthritis. Even our eyeballs need plenty of lubrication to work well and remain healthy.
ch water through your skin. Then you need to put liquid back in your body by drinking plenty of water so you won't get dehydrated (say: dee-hi-drayt-ed).
http://kidshealth.org/kid/stay_healthy/food/water.html