Pro stuntman terrifies himself and the viewer in this epic roof jump

Well holy god.

Christ on a flying bicycle.

This GoPro video from professional stuntman Ethan Swanson is equal parts awesome and terrifying, as he leaps from a multi-storey building in Chicago, down the roof opposite, before landing on a stairwell near ground level.

Swanson is a pro. Do not try this at home.

Crazy.

There's a moment in the clip just before the one-minute mark when you can hear Swanson - who again, does this kind of thing all the time - breathing heavily, like he's not sure this is his best idea.