Over the past weekend I avoided the convenience of paying someone to cut some low-hanging branches on the trees in my yard. I avoided the convenience of cutting them down with a noise- and pollution-making chainsaw. Instead, I cut them down myself, and then cut them into sections so the county trash collectors would take them away, all with a bow saw that cost less than $20. I also avoided needing to pay to go to a gym. And I got lots of fresh air, sunshine, and a good upper-body workout.