Once had a field job where I did nothing about it after I left. And then I had a new job where I was working at a desk and still continued to work after I went home. The latter job I aged considerably. While in the former, I was in the best health. But man, there were some days that I had to fight to get up in the morning after tiring myself the previous day. Little did I know it was keeping me young.

Routines are important. Even if artificial.