Your brain is most alert one to two hours after waking, according to the Sleep-Wake Disorders Centre in New York.

根据纽约的睡眠障碍中心的观点，在醒来后的一到两个小时，你的大脑是最为清醒的。

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Steve, who is thought to be in his late 40s or early 50s, said after waking up in an unknown park he managed to find his way to the Bullring shopping centre to warm up.

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