>>23806318uuuuuh one time i placed third in a marathon in a small town, that felt pretty good
maybe if there's some idea for a project you've dreamed about, the feeling of spending hours & then seeing it come to life is pretty exhilerating
etc
i know it's vague but that's kind fo the point, the thing which is most rewarding will be individual to you, unlike sex chemicals which are in everyones identical bodies & which can only provide that set amount of hedonic pleasure