Personally I will be glad when the world moves on from the phrase "side hustle" and consigns it to the same junk box within which resides equally embarrassing but far older phrases such as "far out" and "totally groovy" and (for Brits) "wizard prang." Calling a sub-minimum-wage treadmill a "side hustle" is a desperate attempt to make pointlessness seem fashionable, whereas frankly it's just sad.