Watch record-breaking free solo slackline walk

Earlier this month, Spencer Seabrooke broke the world record for the longest free solo slackline ever. He walked 209 feet, 1000 feet above a canyon in Canada. He slipped off the rope twice and had to catch himself.

The soles of my feet start to hurt when I watch videos of people doing crazy high-elevation stunts. Does that happen to anyone else?

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