professor zeitzer, thanks for your time. >> well, thanks for having me. >> real, super quickly, justxplain what happens on the clock this saturday night into sunday morning. >> well, clocks fall back. that's you know, you you get that extra hour of sleep in there. >> all right. so the effect is what happens the next day in terms of what we'll notice. >> exactly. it's basically like taking a trip. you're basically moving a time zone in a single day. and so it's in the fall. it's great. you get that extra hour of sleep and in the spring, not so good. you're going to lose that hour, right? >> it's so funny. some people love it when it's brighter out early so they can get up and get out of bed. other people prefer it, you know, brighter when they're getting home from work so they can still exercise. so people are very passionate about this. so in recent years, there's been a push to end this practice of fall back and spring forward. more than a dozen states, including california, have taken action to try to make daylight saving time. what we're on now, year round. what is the argument fo