5. Make the change!
让改变发生！
The habit: Staying physically active during the holidays.
习惯：在假日期间一直保持身体活跃。
The result: Gaining less weight over the years.
结果：几年里体重上升缓慢
The proof: A study conducted by the U.S. government found adults gained, on average, more than a pound of body weight during the winter holidays - and that they were not at all likely to shed that weight the following year. (That may not sound like a lot now, but it means having to buy roomier pants after a few Christmases pass.) The good news is that the people who reported the most physical activity through the holiday season showed the least weight gain. Some even managed to lose weight.
证据：一项美国政府主持的研究发现，成年人在冬季假期里平均体重增长超过1磅——而且他们在第二年完全不可能把这部分体重减掉。（听起来好像1磅并不多，但这意味着再过几个圣诞节，你就得买宽松的裤子了。）好消息是在假期做运动最多的人体重增长的最少。有些人的体重甚至还得到了减轻。