The Most Useful Podcast Ever is tired of being practical. So this week we threw caution to the wind to learn about some bonkers extreme sports. First, Jacqui jumps out of a plane with Red Bull Air Force member Jeff Provenzano. Then, Popular Mechanics tech editor (and former surf instructor) Alex George talks getting started in surfing, Matt Allyn tests gear on a 50k trail race, and Eleanor comes up with some fascinating slack (line) facts.