A 19-year-old Olympic skier's mind-boggling training exercise through an insane obstacle course

Olympic skiers obviously must have perfect balance, and Swiss freestyle skier Andri Ragettli has found a pretty good training method to test his balance.

The 19-year-old posted a video to Instagram showing an aspect of his training in which he does parkour through an insane obstacle course that includes exercise balls, slides, and balance beams.

The video begins with Ragettli jumping over a ledge and balancing on an exercise ball, which alone is a pretty amazing feat.

From there it gets harder — like running across a balance beam.

And sliding down a ramp on a plank.

And flipping on some rings.

The whole thing must be seen to be believed.

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