Even though it's cold outside, it's important to spend some time in nature in order to help your body adjust. Your insides are smarter than you and they'll adjust to winter on their own, all you have to do is let it. Here is a simple 10 minute (or 20 min!) walking meditation you can do on your way to work or during a break.
Step 1: Dress appropriately and keep yourself warm. Cover your neck with a scarf to keep your heat in.
Step 2: Simply walk for 10 minutes, you don't have to plan out a route or anything. During your walk, don't talk to anyone, listen to any music or engage with anyone around you. Yes, it may feel weird or awkward, but follow this simple rule: Walk by yourself and don't interact with anyone.
Step 3: Notice the things around you and call them out by name in your head, like "Car" "Building" or "Paper cup." Continue to do this exercise for the entire ten minutes. Notice when your mind wanders off and thinks about other things and notice when you add judgements to a person or a thing. For example, "Ugly pink coat" is different than "pink coat." Don't judge yourself for having judgements, that's not the point, instead just notice if you have any judgements.
This exercise helps you be present in every moment. Let me know how it goes! Would love to hear about your experiences in the comments.