牛奶也不含糖,也不含添加剂,营养学家建议睡前最好选择脱脂牛奶,因为它最不容易发胖。
Milk is also sugar-free and additive-free with nutritionists recommending skimmed milk as the best choice before bed as it is the least fattening.
人们上了岁数就容易发胖。
当然,作为人类进化的遗产之一,现代人因而常容易发胖。
Of course, a legacy of evolution is that modern humans often gain too much weight.
Then there are other people who are pretty careful about what they eat and they're still prone to gaining weight.
还有一类人非常注意控制饮食,但是仍然容易发胖
In that process there is a metabolic engine at work, and some people have an efficient engine so that the calories in get banked in the fat, other people have an inefficient engine, that is the calories get wasted as body heat and things like that, and they tend not to gain weight.
这过程中人体内有个工作着的代谢引擎,有些人的代谢引擎效率很高,热量便转化为脂肪储存起来,另一些人的效率低下,能量就以体温等形式被浪费了,因此他们就不容易发胖
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