My son launches his body at the couch from a perch atop the coffee table. Perhaps it's poor form to be unconcerned about this, but I find his mini-daredevil streak endearing. He's not much of a risk taker or thrill seeker (afraid of slides, even) so I'm glad he finds pleasure in performing this feat a dozen times a day. He even comes up with comic-book style onomatopoeia and dialog to pronounce before, during, and after his jumps!
"Up, up, and AWAY!""To infinity, and beyond!""Look out below!"