a我考网

 找回密码
 立即注册

QQ登录

只需一步,快速开始

扫一扫,访问微社区

查看: 58|回复: 0

[托福阅读] 托福阅读练习材料:MiceExposedtoNightLightGetHeavy

[复制链接]
发表于 2012-8-14 23:21:39 | 显示全部楼层 |阅读模式
在这个以瘦为美的时代,减肥获得苗条身材是众多女性都在为之奋斗的目标。今天的托福阅读材料中科学家问大家提供了一个简单易行的减肥技巧:关上灯。  
2 m, p. z7 [# U" X7 r  i  You’ve tried everything to lose weight: portion control, fasting, liquid diets, even eating meals on a treadmill. Now, a new study suggests that maybe you should try turning out the lights. Because, at least in mice, exposure to light at night leads to weight gain. The work appears in the Proceedings of the National Academy of Sciences. [Laura Fonken et al., "Light at Night Increases Body Mass by Shifting the Time of Food Intake"]4 ^2 K- Q3 c& |0 Z/ y% _+ {  j

1 ?2 c+ _" H) H  Obesity is an epidemic. Maybe it’s because we eat too much and spend too much time in our seats. But another factor could be that these days we’re never really in the dark. Streetlamps and indoor light sources now brighten our nights. And that light pollution could be messing with our circadian rhythms, which control not only sleep, but metabolism. In fact, mutant mice that have no circadian clocks tend to be chunky." \! s- H+ {2 g5 P

  o* h* G/ {" M, b2 G  To test the connection between photons and fat, scientists took mice and lit up their cages. And they found that mice that were exposed to even dim light at night were chubbier than mice who spent their evenings in the dark. Though they all ate the same amount, the fat mice snacked more when they were less active, perhaps failing to burn off those calories.' d6 {. c7 O; z
% |, K/ Z* l& B% L
  So maybe skip the night light. Especially the one that lights up when you open up the fridge.
回复

使用道具 举报

您需要登录后才可以回帖 登录 | 立即注册

本版积分规则

Archiver|手机版|小黑屋|Woexam.Com ( 湘ICP备18023104号 )

GMT+8, 2024-6-17 07:32 , Processed in 0.322863 second(s), 22 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表