This is a sane idea, but sunrise is often far later than when people are expected to get up 'early'. And add the crazy that DST is to one's schedule, and waking

This is a sane idea, but sunrise is often far later than when people are expected to get up 'early'. And add the crazy that DST is to one's schedule, and waking up early becomes a very strange, shifting ideal. (Lately, I've heard 4am to 5am match this ideal; personally I like to have attainable goals, like slouching into work before the crack of noon.)