Yet, unlike the classic addictive drugs, Ecstasy does not produce physical withdrawal symptoms.

但和传统上瘾药不同，停止服用摇头丸后不会产生任何身体上的戒断症状。

It also means that when you try to quit drinking coffee or miss your daily intake, you might experience some withdrawal symptoms and feel more tired than you would have before you ever drank coffee!

这也意味着当你试着戒掉咖啡，或者是超过了每日摄取量，你可能会面临一些戒断综合征，并且比起你从未喝咖啡时来得更加疲惫！

He wrote: 'Indeed, newborn infants of caffeine-consuming mothers have been reported to experience caffeine withdrawal symptoms including disturbed sleep, vomiting, increased frequency of irregular heartbeat and respiration, and increased fine tremors'.

他写道：“事实上，据报道，摄入咖啡因的母亲的新生儿会出现咖啡因戒断症状，​​包括睡眠不安、呕吐、心跳和呼吸不规则频率增加，以及细微颤抖增加。”