My family has always been about walking. My grandparents on my Dad's side took walks everyday and my grandfather on my mother's side enjoyed the same in the woods. Naturally, I followed suit.
On Sundays, I used to walk around a close by park with one of my girlfriends to catch up on the week and whenever I am going somewhere that isn't too far to, I walk. It's why I like living in the city, so I can walk everywhere.
It's a warm-up and preparation on my way, and a wind down on my way back. It's simply the most grounding exercise I know. And it provides me with space between appointments and home. Do you usually drive or bike? Try walking next time!