Ever had the urge to ride a dirt bike down a slope as it gains momentum, before launching it - and yourself - into the air just to feel that adrenaline rush before landing wheels-first onto the ground again? Most Fun Gym gives classes on dirt bike stunts, and their approach is that no one is too young or too old to pull off these daredevil antics. We speak to founder Oh Kah Beng on the types of students he gets, the risks involved, and what makes his gym the most fun of them all.