why would joy trigger the instinct to jump? i can’t answer that. i’m not sure i’ve ever jumped in response to joy. i believe i’d be inclined to do something like: smile, say ‘yay,’ call someone to spread glad tidings. not better responses, just different.
i know that people do jump for joy, at least very-soon-to-be college grads do, at least girls, anyway, if you want to get all picky about it. Shown here…… Miss Lily and friends on the eve of their commencement, along the shores of a lake in northern Vermont, jumping for joy.
And Lily, she jumped the highest. Not that it’s competition or anything.