Men tend to put on weight in middle age.

男人到了中年体重往往会增加。

《柯林斯英汉双解大词典》

But a new study suggests it might help people keep weight off in middle age.

这与骑自行车狂奔不同，不会消耗大量的卡路里，不过，最新的一项研究表明，做瑜伽可以帮助中年人减肥。

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What is happening in middle age that makes our brains so forgetful?

发生了什么事，中年以后，使我们的大脑如此健忘？

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In fact, the two examples which buck the trend - the two body systems which do clearly deteriorate in middle age - make my point for me.

BBC: Viewpoint: Just what is middle age?

Since 1995, Dr. Ryff and her Wisconsin team have been studying some 7, 000 individuals and examining factors that influence health and well-being from middle age through old age in a study called MIDUS, or the Mid-Life in the U.S. National Study of Americans, funded by the National Institute on Aging.

WSJ: University of Wisconsin Study Finds Eudaimonic Happiness Lessens the 'Bite' of Risk Factors for Disease

Robert Zarbo, a Bechtel engineer working in Iraq, approaches a middle-age man who's wearing a dress shirt and slacks.

FORBES: Desert Storm