That reminds me, back in 2017 I had to go on a job in the mountains (I live in the Alps, we were working at 2.400 m of altitude) during preparation for wrestling season. We had to walk on site every day from 2250 m, and me being the head of the equipe and wanting to spare my co-workers, I was carrying always 20 kg of gear on me, somtimes up to 50. The last part of the trip was about 800-1000 m long, climbing all of those 150 m of height difference. I was walking between basecamp and site up to five times per day, and was pushing the pace a little bit more. On the last day, I decided to run it. So I handed my pack to our native American carrier (an exchange student from Arizona, huge guy, around 120 kg - him and me were both very amused of the notion of the "native American sherpa", so it stuck) and ran that bit. It took me 4.53 min, but it took significantly longer to stup the urge to throw up

Looking back, I probably was in the shape of my life that summer.