Maybe why Florida and Texas is doing so well. Along with not keeping people locked up.
I walk dogs 5 days a week, even in winter time. I attribute the fresh air and sunshine to my staying healthy this whole time.
Plus my vitamin D levels, natural vitamin D levels heading into winter months is way over the normal ranges when tested. Primary doctor told me to stop taking supplements, I smiled and said I don’t take them. Told him it is natural sunshine. Levels fall slowly over winter to normal ranges towards spring here. By then I am out in the garden getting beds ready for planting, in short sleeves!