Jump to 3:20 if you just want to see the rapping

Each week musician Mac Lethal takes on a new challenge suggested by one of his subscribers. This week that challenge was to rap for 90 seconds which he fell just short of.

Wim Hof is a daredevil capable of running in extreme cold weather and controlling his body’s temperature. He developed an incredible breathing technique, which Mac used in this video to elongate his breath control.