And I bet you were far fitter and healthier than you would have been if you'd spent that time sitting behind a desk.
In between tech jobs a far younger me did a stint working for the city library service. The job mostly consisted of humping great piles of books around from one place to another. My musculoskeletal system has never been in better shape. The only physical downside was recurrent ringworm - a common complaint amongst my colleagues at the time, due to some weird things that lived in and between dusty pages of books.