Good evening．I am doctor Winkle，saying hello to you from the school radio station．Do you have trouble sleeping at night?Tossing and turning in your bed can be a very painful experience．Then maybe this is for you．[ 19 ] When you worry about needing sleep and twisting around,trying to find a comfortable position,you’re probably only making matters worse．What happens 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．[20]Do you rest frequently during the day?Do you get virtually no exercise，or do you exercise strenuously late in the day? Do you think about sleeping a lot or sleeping late on weekends?Any or all of these factors might be leading to your insomnia by disrupting your body’S natural rhythm．What should you do then on those sleepless nights?[ 21 ] Don’t bother with sleeping pills．They can actually cause worse insomnia later．The best thing to
do is to drink milk or eat cheese or tuna fish．They ale all rich in the amino acid that helps produce in the brain a neurotransmitter that induces sleep．This neurotransmitter will help you relax，and you’11 be on the way to get a
good night’s sleep．Until tomorrow’s broadcast,this has been another in the series“Hints for Good Health’’by Doctor Winkle．
What happens when you turn and twist to get comfortable?
【解题思路】
1．四项均为句子。
2．三项含有与睡眠、休息有关的词汇(relax，sleep，sleeping.。
3．四项均提及第二人称(your，you.。
结论：本题可能考查对睡眠情况的描述，从句式来看，可能是谈到某种影响。
【解析】短文在开始部分提到，如果担心自己难以入睡，一直辗转反侧试图找一个舒服的姿势的话，你很可能只会使情况更糟，因为这时候心率会加快，从而使人更难以放松、入睡，故选B。