Obesity linked to heater use in the home February 25, 2011 at 3:02 PM CST - Updated June 23 at 12:13 PM (CNN) - A recent study in the International Journal of Obesity is telling people to turn down their heaters at home to help them fight obesity. Researchers have found people who keep their homes warmer were twice as likely to become overweight. Doctors said it's possible the body burns more calories if it needs to work harder to maintain a stable temperature. The study also found for every hour of sleep people got each day, their odds of became severely overweight dropped 30 percent. Copyright 2011 CNN. All rights reserved.