I'm not going to claim that it improves my creativity or makes me a better person, but for the last few years I've generally taken at least a half hour out of the middle of my workday to walk (I'm lucky enough to work next to a park). It massively improves my mood, and I'd fight hard against giving it up.
There was a tube (underground metro) strike in London the past few days, so I walked to work, leaving my apartment at about 6.30am and arriving in the office at 8am, mostly along the river. It was excellent and I'm considering doing it 1-2 days a week even when I don't need to.
I agree it's a great feeling. I started walking 45 minutes a day, 6x a week, a few months ago. My wife convinced me to try it after pointing out that the health benefits were not insignificant (I was mainly biking until then, but losing my enthusiasm because of my rides getting longer and longer and requiring more prep). The gains have been pretty great--in just three months I'm down at my waist by two belt notches and when I get back to work I'm usually in a better mood.
Next I just need to conquer this stress eating thing. The exercise has really put my compensatory eating habits into stark relief.
I walk 45 minutes to and from work each day along a beautiful tree lined street. It is a great way to start the day and then to transition back into home life, sort of a metaphorical journey to leave my work problems at work.
My walk is around 20 minutes and the time spent organizing my thoughts for the workday on the way in or winding my brain down from work mode on the way is a great benefit.
Every so often my wife will pick me up directly from work and the conversation is usually terrible because my brain is still thinking of the problems I was solving a couple minutes beforehand.
There was a tube (underground metro) strike in London the past few days, so I walked to work, leaving my apartment at about 6.30am and arriving in the office at 8am, mostly along the river. It was excellent and I'm considering doing it 1-2 days a week even when I don't need to.