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The end of daylight saving time can disrupt your body's internal clock, or circadian rhythm.

Studies have linked time changes to increased health risks, including depressive episodes and car accidents.

It can take from one day to a week for your body to fully adjust to the time change.

early this morning, Nov. 2, and we're back to standard Eastern time. Your phone updated! We got our hour back! More sleep!

So why do you feel so out of it?

Any (your circadian rhythms) can be disruptive and leave you groggy, experts say. For some people it's no big deal, but for others it can mean real problems.

Some studies have shown an increased risk for and with time changes, although those are mostly linked to turning the clocks forward in the spring (and ). However, a

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