It depends what type of skiing you want to do. There is cross county, helicopter skiing and downhill.
because when you jump it sometimes could be very very hard
cross country skiing
No cross-country skiing and skiing are two completely different things. They require different equipment. There are "slope" skis which most people are used to that attach to your foot and boot completely. The cross country skis have your heel loose to make it easier to propel yourself forward. Skiing is done on a slope or mountain and cross country isn't necessarily on a hill. They go across all sorts of terrain.
It is one of the most complete aerobic exercises (apexvs)
Cross - Country Skiing is really an all round sport. But you would need, most of all, Upper body strength, Balance, Good Stamina and lots of concentration.
Most popular sports are cross-country skiing and football (association).
The long-distance cross-country skiing.