Most winter sports demand either speed or precision. Biathlon demands both, at the same time, in freezing temperatures, with a rifle on your back. Athletes ski several kilometers at full.
A lot of new skiers think staying warm means piling on the thickest jacket they own. That usually works for about one chairlift ride before the sweating starts. Once moisture.
Ever watch someone ski down a slope and wonder how they make it look so easy? There is a good chance they were using parallel skiing. It is a technique.
Most people assume cross-country skiing is something you figure out naturally. Strap on skis, push off, done. Then the first downhill hits. Learning how to cross-country ski the right way,.