However , doing this too close to bedtime may actually cause difficulties in getting to sleep as your body will still be revved up .
然而,在接近睡觉的时间锻炼实际上可能导致入睡困难,因为你的身体还是还兴奋的。
The car revved louder and louder and suddenly , with a crunching noise , the bars were pulled clean out of the window as fred drove straight up in the air .
汽车马达声越来越响,突然嘎啦啦一声,铁栅栏被连根拔起,弗雷德开车笔直朝天上冲去
" It 's as though once you get your system revved up by practicing a particular skill , the brain acts as though you are still engaged in the task when you are not and learning still takes place , " says wright , who teaches in northwestern 's school of communication .