Scientists have debunked two long-held health beliefs: stretching before exercise and drinking 8 glasses of water a day.

Australian researchers now feel that stretching before and after vigorous exercise does nothing to reduce soreness or injury. They studied army recruits in basic training and found that stretching prevented an average of only one injury every 23 years. The rate is even lower for the rest of us, who don’t exercise that hard.
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Good news for couch potatoes: A few weeks ago the New YorkTimes touted the advantages of a high protein, high fatdiet, so you can go ahead and bring home those fast foodburgers. Now scientists say that early morning exerciseweakens your immune system and makes you more vulnerable toinfections.
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