Water is very important in keeping your body healthy.- B5 [; f# c5 m9 d3 R) F
Seventy percent of your body weight is water, so it is important to make sure that you supply your body with plenty of fluids.公仔箱論壇! e$ T( C7 ~. j% |! n
Water serves many purposes in your body including keeping blood clean, keeping skin soft and stretchy, and cooling you off when you become overheated.tvb now,tvbnow,bttvb5 }$ l. [3 Y9 k0 {2 d0 o/ k. t8 }% q
When you exercise, water is most important in cooling.
' Q1 i% Y4 S& j. S2 I' h$ H7 W% k* y公仔箱論壇Water is used in what we call the perspiration process.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 n7 U2 o' |2 u* ~. i" n7 X
The 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7 a; p& o: Q: U2 F! E3 u! G' u
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.
2 y- i+ g1 n5 \5 jTo help keep your body cool on humid days, drink cold water many times a day. / w: C) D8 } E, i( T3 A* Z
So how much water should you drink?tvb now,tvbnow,bttvb% P7 R3 g- H1 ?) S; E5 q5 t
You should aim to drink 8 glasses of water each day.5.39.217.763 F) J5 I$ z! ?: w/ B
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        Eight glasses looks like a lot of water for one day, but don’t forget, milk and juice count too.
" M" T; ?) ^6 Y& K$ |( A& MSports drinks also count, but not drinks with caffeine.
- L4 T R: k' V# Q# r) fDrinks with caffeine, like soda, force more water to leave your body, so there isn’t as much water to help cool your body. 公仔箱論壇3 q' b* T8 J$ Z9 T* o! w$ C+ |: I7 @
 Here are some simple ways to drink water throughout the day:
- [) @; S/ h: b6 E; e  1 glass with each meal
' j7 {( k* C- \$ O! q  1 glass each time you brush your teeth
7 H% H& d, v7 j* Y$ K, Wtvb now,tvbnow,bttvb  1 glass after you exercise
" ^/ P) O$ _1 ^8 l& D6 R  1 glass after school 8 X. D4 D+ |5 z
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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. 7 X, j0 r; W2 Z4 l2 a
During exercise:公仔箱論壇% Y6 ^7 Q: i" o2 Q) I) d
An athlete should drink about half a glass (3-4 oz) of cold water every 15 minutes.tvb now,tvbnow,bttvb6 R: W% i$ c1 `
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After exercise:
# J: u) D# z* x公仔箱論壇An 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./ F4 V; ~6 e) {% X
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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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