Well I agree, I can see it with myself. I don't drive, and I have never drove so I have always walked as I don't really like public transportation. I walk quite quickly and if I don't get in some of that everyday my anxiety spikes and so does my irritability, I also start to feel down pretty quickly.

Now I do about an hour and a half of yoga a day, sometimes, more, I still walk, or bike ride, and I do other activities. I almost have no anxiety anymore, and when I do have anxiety it is usually a situation that actually warrants some.