Yahoo!: Sleeping too much? Too little?

http://sg.m.yahoo.com/w/ygo-frontpage/lp/story/http%3A%2F%2Fsg.news.yahoo.com%2Fafp%2F20100801%2Ftls-health-science-sleep-heart-stroke-aeafa1b.html/detail.bp%3B_ylt=AjW.Muzlyv8py
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?ref_w=frontdoors&view=today&.intl=sg&.lang=en-sg&.tsrc=yahoo

Sent from my iPhone but I still love my BlackBerry :)