Your body has an internal clock that dictates when you eat, sleep and might have a heart attack – all based on time of day

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Active member
I've always been amazed at the body's internal clock. For instance, I need to get up at 3:30 am, so I set my timer. Now it's in my head that I need to get up at that time, and what usually happens is about 10 minutes before my clock goes off, I'm up!
 
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