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Do you have troulbe sleeping at night? Then maybe this is for you. When you worry about getting to sleep and keep tossing and turning around, trying to find a comfortale position, you're probably only making matters worse. What happens when you do that is that your heart rate actually increases, making it more difficult to relax.
You may also have some bad habits that contribute to the problem. Do you often rest during the day? Do you get very little exercise, or do you exercise a lot late in the day? Have you got enough sleep, or do you sleep late on weekends? Any or all of these might be leading to your sleeplessness. What should you do, then, on those sleepless nights? Don't bother with sleeping pills. They can actually make it worse later. The best thing to do is to drink milk or eat cheese. These are all rich in a kind of acid and help produce a chemical in the brain that controls sleep. That matter will help you relax, and you'll be on your way to getting a good night's sleep.

答案解析：
(1) 正确答案为B。根据Do you have troulbe sleeping at night? Then maybe this is for you. 你有失眠问题吗？那这篇文章会对你有用。可知，这篇文章提供了一些解决失眠问题的方法，因此B项正确。
(2) 正确答案为A。根据do you exercise a lot late in the day? 你晚上会做大量运动吗？以及后面说这会导致失眠。可知，晚上做大量运动会导致失眠，因此B项正确。
(3) 正确答案为C。根据Don't bother with sleeping pills. They can actually make it worse later.不要吃安眠药，那会使问题更糟糕。可知，安眠药对失眠无用，因此C项正确。