This is usually true for me. Working later in the day should mean I can sleep as late as I want, but invariably I wake up after six or seven hours and start thinking. Gotta get this done, need to take care of that. Doesn't matter if those things aren't urgent; my brain says GET UP!
Except this morning, when the smoke alarm in the upstairs hallway was my wake-up call at 6:30. Blaaaaaat! Blaaaaaaaaaaat! I sat bolt upright. What the hell??? Jumped out of bed. Sniff sniff. No smoke. Friggin' battery needs to be changed.
This weekend Daylight Saving Time ends. You should be changing your smoke-alarm batteries (and flipping mattresses). I just wish mine had waited until daylight to remind me.