Ski touring, a good exercise on every level !
You have certainly not missed it, if you want to go up... you will have to use your legs strenght. Never mind, this is probably the best year to take touring skis out!
Another way to ski, which will makes you (re)discover skiing and see the mountain differently. A bit more effort on the way up, but a way more sensations on the way down. Forget the cliche about ski touring : you don't need rope or ice axes in the bag, the reality is much more accessible than you might think.
Here is a little article to convince and help you to take out the skins and enjoy ski touring in Tignes!+