We have a small dog we have been walking every day for years regardless of the weather. Sometimes it can be a challenge to get out there. But I do believe it is part of the reason we are continuing to do as well as we are in spite of our ages. Here's a link to an article, from PC's archives, on the subject of mindful walking (my own preferred method) plus a link to an article that discusses environmental effects on the mind & body:

How to Use Mindful Walking to Combat Stress

Environmental Effects on the Mind and Body: Depression Relief

Hope Eric decides to leave you alone soon...