This is the weekend most of the country goes back to standard time, and people wrestle with changing the clocks on their microwaves, cars and ovens.
Happily, a lot of devices re-set themselves -- making it easier to know what time it really is when you wake up on Sunday morning.
Many people are already sleep-deprived, and sleep researcher Dr. Phyllis Zee says just a one-hour change can affect your ability to multi-task, stay alert, and even maintain your balance.