Don't try to work out, and make sure you get at least eight hours of sleep a night.

别急着锻炼，并确保您每晚至少有八小时的睡眠。

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It has long been believed that getting at least eight hours of sleep a night is good for health.

227长期以来人们相信每天睡眠至少8小时是有利于健康的。

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take at least eight hours to plug in those numbers, and the figures might not even be right”I said.

“要加进这些数字至少要用8小时，而且数字还不一定准确。” 我说。

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It takes just a half-hour to fly to Bamiyan's provincial capital from Kabul, but to drive you bounce for at least eight hours on a bone-jarring dirt track.

NPR: With Vote Looming, Afghans Look for Progress

Verizon Wireless prides itself on having at least eight hours of backup power at all its cell towers, and spokesman Tom Pica said technicians were busy making sure the generators that kick in once batteries are depleted had fuel.

WSJ: Phone companies prepare for storm power outages

Finally, make sure that you are getting at least seven to eight hours of sleep, as there has been considerable research in the last five years on the effect of getting too little sleep on obesity.

CNN: Best way to jump-start your metabolism after a plateau?