Which sport in the Winter Olympics requires the highest physical fitness?

Alpine skiing. These differences in vertical heights increase the difficulty of the competition, because competitors need to cross a series of flag gates set on the taxiway while sliding down. If a competitor misses a flag gate, he must go back and cross the missed flag gate again, otherwise he will be disqualified.

Alpine skiing starts by one person in each event, and the starting order is determined by drawing lots, but some events need to ski twice, and the order of the second starting is determined by the result of the first competition. The departure interval is generally 60 seconds, and only the rotating events adopt unequal departure.