In your teens you had no fear, in your 20s you have a niggling sense of self preservation at the back of your mind. 30s? You have  a mortgage and dependents, and past 40? Well shit just hurts getting out of bed the next day after gates.
Welcome to your future if you're a young whippersnapper, if you're as old as the older of the the two hosts, then you're already there.
KY throws out his back lifting a kettle bell back onto the rack, and the really old fucker gives himself a rotator cuff injury making coffee in the morning. Don't bother cloning us, we're fucked.
Looks like it's yoga and pilates from now on for the boys.