Ive been doing this quite a lot lately, practically daily. If I want deliberate exercise I run. But lately I go for long walks in the snow pack on the frozen pond. I'm itching to go on one now as I look out upon the pond from my home "office" set up and it's snowing too which I am really looking forward to the sound of. Yesterday I was out there for 3.5 hours and quite a few of the ice fisherman I chatted with remarked about the length of my walk. The best though was despite the 15 mph wind, I stepped into one spot in the middle of the pond that despite being hundreds of yards from land was completely sheltered and I peeled off my outer jacket and used it as a beach towel and reclined on the ice with my face soaking up the warmth of the sun.