喝咖啡的最佳时间：上午10点半！

Writing on his blog he said: ‘If we are drinking caffeine at a time when your cortisol concentration in the blood is at its peak, you probably should not be drinking it.
他在博客中写道：“如果当我们的皮质醇浓度在血液中达到高峰时喝了咖啡，那么你可能不应该在这个时候喝咖啡了。

‘This is because cortisol production is strongly related to your level of alertness and cortisol peaks for your 24 hour rhythm between 8 and 9am on average.
“这是因为皮质醇激素的生产与人的警醒度紧密相关，在一天24小时的生物钟里，早上8-9点皮质醇达到顶峰。”

He added that people who drink a coffee first thing in the morning, when their cortisol levels are naturally high, will soon find themselves needing to make their coffee stronger and stronger to get the desired effect.
他补充道，人们早起第一件事就是喝咖啡，他们的皮质醇水平自然就高了，很快他们就会发现自己需要喝咖啡来达到所需的效果。

However, he did accept that cortisol levels at different times of day vary from person to person meaning that the best time of day to drink a coffee also differs between people.
不过，他确实赞同每个人在一天中的不同时间段所接受的皮质醇水平因人而异这个说法，即每天喝咖啡的最佳时间也因人而异。

For example, people who get up very early may find their cortisol levels drop earlier than those of people who get up late.
例如，起的很早的人可能会发现他们的皮质醇水平比那些起的晚的人的皮质醇水平下降的早。

He says it helps turn energy into sugar to be utilised by cells in the body and that it also plays a role in controlling the body clock.
他说，这有助于利用体内细胞把能量转化成糖，并且对控制人体生物钟也起作用。