By logs, I thought you meant the physical things. A great deal of my exercise involved cutting, splitting and stacking firewood. It warms you twice, once in the preparation and then in the burning. Exercise with a purpose. If I have enough firewood laid by, I sometimes continue the porocess to donate anonymously to needy neighbors. Or I do 10k runs on my cross country skis, with a rifle in deer or moose season. The dressed carcasses again wind up anonymously on needy doorsteps.