Water is very important in keeping your body healthy.tvb now,tvbnow,bttvb9 B5 u1 Y7 g" r# t3 E. S5 |( u
Seventy percent of your body weight is water, so it is important to make sure that you supply your body with plenty of fluids.
) d8 H# N) o9 K4 ~3 k$ wWater serves many purposes in your body including keeping blood clean, keeping skin soft and stretchy, and cooling you off when you become overheated.: j; X, w& X0 j- g6 U. ~* E4 F4 @
When you exercise, water is most important in cooling.
, p2 A( u3 r5 d7 n. ^公仔箱論壇Water is used in what we call the perspiration process.
0 _: P7 ?, V! i; Ntvb now,tvbnow,bttvbThe perspiration works like this: first the body uses water to produce sweat; then the sweat on the skin evaporates (or dries up), when the sweat dries, it cools off the body. 公仔箱論壇, @8 f8 d' k; G; ]2 Y. |
On humid days (when it feels sticky and wet outside), the perspiration process may not work well enough to keep your body cool, since the sweat we make doesn’t dry up as well.5.39.217.77:88988 W5 T7 d) o& o" Y4 n
To help keep your body cool on humid days, drink cold water many times a day. 5.39.217.77:8898. C- l/ g# X; o& p% M, P
So how much water should you drink?
0 l1 [2 g C- Q8 a/ C, Mtvb now,tvbnow,bttvbYou should aim to drink 8 glasses of water each day.
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8 @/ s* A% L+ ^ {- K1 r6 s5.39.217.77:8898         Eight glasses looks like a lot of water for one day, but don’t forget, milk and juice count too.5.39.217.77:88980 }! }& X9 A$ m
Sports drinks also count, but not drinks with caffeine.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。( O/ ~5 X! b S7 T5 ?' e1 _$ g
Drinks with caffeine, like soda, force more water to leave your body, so there isn’t as much water to help cool your body.
0 n0 ~% m$ w! H" e a& R' s- ztvb now,tvbnow,bttvb Here are some simple ways to drink water throughout the day:
/ e7 f- Y$ x( Y4 Y" n J. k3 _公仔箱論壇  1 glass with each meal
4 u" |. n6 Y/ O8 ]! gTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。  1 glass each time you brush your teeth ! r9 {0 z5 s1 A# l( z
 1 glass after you exercise 5 w/ n3 h4 S( Q- \. N
 1 glass after school tvb now,tvbnow,bttvb/ A* p i7 v3 k2 t `5 o/ h- [6 D) _1 n
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Keeping yourself hydrated is especially important when exercising. Follow these tips to prevent dehydration. Before exercise: An athlete should drink about 1 to 2 glasses (10-14 oz) of cold water 1-2 hours before activity and a little more than 1 glass (10 oz) of cold water 10-15 minutes before activity. 5.39.217.77:88981 @) K/ {4 y( X* \& J
During exercise:
% l7 T; Q* Z& @, J8 {# ^An athlete should drink about half a glass (3-4 oz) of cold water every 15 minutes. V( f. S- m# M' C; o+ z
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After exercise:
" Z4 M' h. E+ i6 l! q5 w* I# uAn athlete should drink 2 glasses (16 oz) of cold water for every pound of body weight loss. If no weight was lost an athlete still needs at least 2 glasses to stay hydrated.
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All individuals should drink water BEFORE they are thirsty because the thirst response occurs after dehydration has already taken effect in the body. |
發表於 2007-12-3 09:27 AM
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