As you know, daylight saving time begins tomorrow at 2 a.m., so you should move your clocks one hour ahead then. But before you go skipping away with all of your new sunlight, there's another task at hand: change the batteries on your smoke detector. You should do so at least twice a year, so it's best to just get in the habit of doing it when you change your clocks. Another thing to do this weekend is flip your mattress. To keep the wear even, you should flip your mattress both ways at least twice a year — and vacuum it while you're at it. That way, you won't have to worry about when you did either task last!