I also had been wondering for months how I could improve my upper body strength; one needs that for getting out of mine shafts, and I always manage, but I want to be able to do much more demanding trips without running out of arm muscle power. And I was about to risk the wrath of my landlord by screwing a beam into a door frame when suddenly Rob showed me the existence of an apparatus that makes that unnecessary. A chin-up bar that wedges itself into the doorframe! I immediately ordered one, with the result that I had to remove a box adorned with ample sweaty and beefy blokes from my university pigeon hole, with slight embarrassment... but the device in place now, and every time I go through that door opening and I have my hands free I do a pull-up. This is going to work! Bring on the fathomless mine shafts!
One would assume I'll never get into a better shape than when I was 17 and biked to school and back every day, which was 15 km, but I am sure going to give myself a run for my money!