什么时间做数学题、读文章、吃药等效果最佳呢？本文会告诉你！ 　　(Words: 190; Time: 3 minutes) 　　We do our best physical work when our rhythms are at their best. For most people, this best time lasts about 4 hours. Arrange your most taxing activities when your temperature is highest. 　　For mental activities, the timetable is more complicated. Some tasks, such as mathematical work, are best dealt with when your temperature is on the rise. For most people, this is at 8 or 9 am, while reading and thinking are better done between 2 and 4 pm, the time when body temperature usually begins to fall. 　　If foods are absorbed differently at different time of the day, certainly caffeine, alcohol and medicines will be too. Aspirin compounds, for example, are most effective in the morning, between 7 and 8 (so is alcohol). They are least effective between 6 pm and midnight. Caffeine has the most effect around 3 in the afternoon. 　　Knowing your rhythms can also help overcome sleep problems. Consult your body temperature changes. Your bedtime should be the time at which your temperature is lowest. This is between 11 pm and 2 am for most people. 　　Help: 　　taxing: difficult or needing a lot of thought or effort 来源：[ 英语周报 ]