Cool man, I think a lot of people are Vit D deficient where there is lots of cloud cover. Get outside this summer though.
I'm just happy being able to walk up steep hills and through rough terrain with a heavy pack on my back without being out of breath and feeling like I'm going to die. I don't really care about my weight and or health beyond that, tho I probably should.
By the time I'm 50 I'll have arthritis in my knees and shit and wish I was more like you butcher, I know that, but I still won't do it.