Believe it or not, photography is a lot like sports exercise. If you leave it for too long, your muscles get flabby and you have to recondition them to get back into peak performance once again.
I try to keep my photographic skills well-practiced so that when it's time to roll for an assignment, I am in peak form and able to deliver. How do I do this, you ask?
Well one of my ways is Street Photography.
PS: I also condition myself physically as well all year just to ensure I'm in top shape for all the wedding and events and documentary photosessions that I do. It can be physically draining, especially if you're looking at 8-14 hour days!