Ask your doctor before engaging in the activity. This is non-negotiable, especially if you haven’t done a minute of exercise in at least three months. Your physician will tell you exactly the kind and level of activity that you can do, and what you should avoid.
Once the doctor gives you a green light, pick your clothing. Wear something comfortable and easy to move in like a T-shirt, jogging pants, and running shoes. To keep away the growing chill, wear an extra layer. A hood might also protect your head and face from any wind.
Plan out your route, and measure your walking time. Start small and slow. Begin with a 10-minute walk to the nearest block. Do this for a week, before working up to 15 or 20 minutes or longer distances.