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Unit 112：Get out into the cold
第112單元：迎向寒冷
People don't need to hibernate all winter long,although you wouldn't know it from the increase in couch potatoes when the first frost shows up.
人類是不需要冬眠的，不過寒冬初至，窩在沙發(fā)上看電視的人便多起來，這點使我們忘了我們是不需要冬眠的。
You may be cozy,but you'll never lose any weight that way.
你也許覺得溫暖又舒適，但那樣卻不能使你減輕任何體重。
Bundle up and stay active.Getting involved in a winter sport follows the same basic principle.
穿著暖和保持活力。參與冬季運動須遵照同樣的基本原則。
In winter,your body burns more calories to keep you warm.
冬天時，你的身體會燃燒更多的卡路里來保暖。
Cross-country skiing,for instance,burns somewhere between 500 and 700 calories an hour.
舉例來說，越野滑雪每小時就可燃燒大約五百至七百卡路里的熱量。
