Kinetic Rebound

I positioned myself on the polished wooden armrest to calculate the elasticity of the cushion below. Upon dropping directly onto the foam, the compressed material responded with an instantaneous upward thrust, propelling my plush body unexpectedly high into the air. I immediately calibrated my posture and repeated the descent with a slight flex of my legs, doubling the vertical lift. By the fourth oscillation, this ceased to be a rigorous measurement of potential energy; it was simply exhilarating. I ended the sequence flat on my back amid the cushions, listening to the gentle hiss of returning air.