I think it’s more the other way around, physical health determines mental state since it gets down to hormones. I know a yogi that has a therapeutic yoga practice. A few chest opening yoga poses for 15 minutes will pump up enuf feel good hormones to relieve depression. Also vitamin D research is blowing up. It’s now considered to be a hormone and Corona viruses ((common cold) strike in the winter not because of air temperature but because of less sun therefore Vitamin D deficiency.