I can second this. I can't begin to count the number of times that spending five minutes walking and with my mind on anything but a given problem has lead to th

I can second this. I can't begin to count the number of times that spending five minutes walking and with my mind on anything but a given problem has lead to the recognition of a major time-saving change in plans. Think of it as pulling off of the highway for a minute to check your map instead of trying to unfold it in front of your steering wheel.