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Head to the mountains, and if the steep trails don't slow you down, the thin air will. There's less oxygen up thereso strenuous activity can leave you dizzy, out of breathor worse. But even though you're beat, biochemical processes are already busy a
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Light might make you a lightweightin a good way. Its been known that bright light in the morning can reduce appetite and body weight. But that fact did not prove that light has a direct effect on weight. Early morning exposure to light could just be
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Study: Regular Exercise Can Change Our DNA 研究表明经常锻炼可以改变我们的DNA Swedish scientists say they have proven that physical exercise changes not only our health but also our genetic material. Scientists have long known that some
2015年VOA慢速英语(一)月
Few people think about how important their skin is. Men especially. Women spend a lot of time caring for their skin. They seem to have a whole load of skin care products. Their handbags are full of moisturizers, regeneration creams and lotions. Our s
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Public opinion polls suggest most Americans favor full body scanners as a way to protect against terror attacks on commercial airliners. The benefits of scanners are being debated in a number of countries. Some groups have raised privacy issues. But
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Head to the mountains, and if the steep trails don't slow you down, the thin air will. There's less oxygen up thereso strenuous activity can leave you dizzy, out of breathor worse. But even though you're beat, biochemical processes are already busy a
2017年Scientific American(二)月