It doesn’t mean that you should stay indoors with your kids just because it is cold outside. This is a misconception most people have and hence, tend to use the cold weather as an excuse not to get active. The secret to enjoying the winter weather is to have warm clothes for your children and you. Dress them in layers, warm boots, gloves, and some warm socks. Once you have dressed the kids warm enough, go for a walk with them.
Children tend to be so energetic. As long as they feel warm, they will be able to run around the compound and play. This boosts their energy levels, making the kids active. If the kids love activities such as skating or snowshoeing, encourage them to play. If it is too snowy, you could also build a snowman with your kids. It is never that serious. As long as you keep watch, the kids will be just fine, playing their games and running around. If the kids are in school, you could ask the teacher to allow them to walk around the school track, to lift their mood and make them active, under supervision.