The posts about physical labor and what age did you feel a change made me think about what work does to your body vs exercise. Now that I have felt that change in my body I feel I have some qualifications to judge this. Physical labor has done it's part to permanently destroy many parts of my body. Someone in the post about your prime age related how they are happy they had a desk job for 25 yrs. before they started their homestead work, there is a lot of merit to this. Hard work or physical labor doesn't seem to help your body from a fitness standpoint unless your job is as a fitness instructor. Hard work is more like sports but without the proper training. both usually end with permanent damage to a part of your body. Sure the hard worker can do that repetitive task all day long, like swinging a hammer or digging a ditch, but at what price? How much pain do they endure every day to perform this task and how many Advil does it take to mask the pain?