Things grown men do together

One of my childhood friends recently bought two pairs of fly jumpers (they’re also called bockers, jumping stilts, sky jumpers and powerstriders). They are not hard to walk or even run with, but it’s very difficult to achieve the agility and vigor seen in the videos below.

The bockers are quite heavy, so running with them for extended periods of time requires stamina. My friend fell while jogging with the bockers yesterday: it kind of looks like a zombie infection.