The common adverse effects included cholinergic effects, drowsiness, weight gain, and transient increase of liver enzymes.

常见副反应为胆碱能作用、嗜睡、体重增加和一过性肝酶升高等。

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Other sports have also been associated with a similar transient increase in S100B, the researchers noted, including boxing, headings in soccer, running and long-distance swimming.

其他的运动也和暂时的s100 B升高相关，包括拳击，足球中的顶球，跑步和长时间的游泳，研究人员指出。

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For positive events, such as marriage or childbirth, the effect was equally transient - the researchers calculated that the happiness increase delivered by the birth of a child lasted for two years before the volunteers ratings were back to normal.

BBC: Happiness 'immune to life events'