People who sleep with lights on or while watching TV or using mobile phones in bed are likely to gain weight, says a new study.
The researchers of Leiden University Medical Centre, Netherlands found out in a survey that artificial lights disrupts the body clocks and also the brown fat cells that burn calories so all lights and gadgets should be switched off at bedtime.
The researchers mentioned that on an average people stay online for about 20 hours a week and for 16 to 24-year-olds this figure rises to more than 27 hours.
Sander Kooijman, a researcher said that the increasing prevalence of obesity was associated with a disrupted sleep-wake pattern in humans and coincides with the availability of artificial light.
The survey is published in National Academy of Sciences