I had a good day yesterday, too. Went XC skiing, diagonal, at a place with set tracks and relatively gentle rollers. I hadn't run on skis in 50 years. In 15k, I probably had 100 meters of doing it right, or at least close to right. I was flying, at least for me. I love the sensation of going fast on a track. I got tired, but a good tired. I had the core and strength to push hard enough for it to be rewarding. Very fun. My back does not hurt today! More, please.
It was interesting to see that only mom, pop, and the kids ski diagonal now. Even geezers were on skate skis. They didn't exist when I used to do it. Cost of entry there is more than I want to pay. I have enough fun with diagonal on my ancient equipment.