Maintaining your diet and weight in the fall and winter can feel like an uphill battle. Many of us tend to put on some extra kilos over winter thanks to our laziness and warm comfort foods. But scientists have revealed a few other reasons behind winter weight. Hibernation During cold months most of us go in hibernation mode making ourselves warm in our cosy beds. This d is one reason why we can gain weight in winter. Scientists suggest that as bears prepare for hibernation humans also have the instinct to stock up on calories during cold winters. According to