Self-explanatory. Find a nice park somewhere and take a relaxing leisurely stroll. Or a brisk, more intense one. Get out and get moving around. I was fortunate to be able to take my runners to a huge park in Gainesville, FL where they ran miles and hills and I got in over 60' of walking while they did their thing.
If that's too strenous for some, it is also National Pencil Day and National Turkey Neck Soup Day. I wonder how many # 2 people on this board have used in their collective lifetimes.