It may be cold outside but winter doesn’t need to be the unhealthiest time of year for you and your family.  Here are five ways to make sure that even when your body is telling you to hibernate you can keep healthy and fit, no matter what the weather’s like. 1. Eliminate sleep debt “On average we sleep six-and-a-half hours a night, much less than the seven to nine hours recommended,” says Jessica Alexander, spokesperson at the Sleep Council, which aims to raise awareness of the importance of a good night’s sleep to health and wellbeing.  But in the winter, we naturally sleep more, due to the longer nights.  “It’s…