【科学60秒】睡得多，长得快_英语听力练习mp3下载-科学-沪江听力酷

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【科学60秒】睡得多，长得快

听力简介：

Parents wring their hands over infant sleep patterns. And so when those patterns change, parents tend to ____1____. But if your baby is sleeping more or napping at weird times, maybe he or she is just growing. So says a study in the journal Sleep.

It’s known that levels of growth hormone rise during certain stages of sleep. So researchers wanted to know more about the link between sleep and growth. They recruited the parents of 23 infants. The parents took careful ____2____ on infant sleep patterns for between four and 17 months. They also noted whether the babies ____3____, and whether they had signs of illness such as rashes or diarrhea. And the babies’ body length and weight were measured regularly.

The researchers found that periods where infants slept more overall ____4____ growth spurts and also a gain in weight and body fat. Both genders experienced that correlation, though boys had more and shorter sleep ____5____ than girls. The scientists note that increases in sleep may lead to increases in waking, as growing bones produce growing pains. So if your baby’s sleeping a little funny, maybe she’s just growing up.
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