49 According to the passage, which of the following does   NOT   produce endorphins?
(A) Running long distance.
(B) Eating a satisfying meal.
(C) Doing light weight training.
(D) Making anaerobic body moves.

   Endorphins act as both a painkiller and as a pleasure provider for our body’s reward system.
內啡肽既可以作為止痛藥，也可以作為我們身體獎勵系統的愉悅提供者。

 When we hurt ourselves, we may get a big dose of endorphins to ease the pain.  當我們傷害自己時，我們可能會獲得大劑量的內啡肽來緩解疼痛。

We may also get an endorphin rush from talking to a stranger, eating a satisfying meal, or being exposed to ultraviolet紫外線 light. 
我們也可能因與陌生人交談、吃一頓美餐或暴露在紫外線下而產生內啡肽激增。

Everyone has different amounts of endorphins, and what may trigger an endorphin rush for one person could very well fail to do so for someone else.
每個人體內的內啡肽含量都不同，對一個人來說可能會引發內啡肽激增的東西對其他人來說很可能不會。

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