If you are experiencing frequent 3 AM wake-ups in a row, it means there's a ‘disturbance’ in your lifestyle.

Around the world, eyes fly wide open every night at 3 am. It's something of a phenomenon - not 1 am or 4 am, but this inconveniently early (or late) hour. If you're up at this time, you'll know the ...

Waking up at 3 AM? Here’s what might be causing it. Getty Images/iStockphoto The house is quiet. Your alarm is hours away. And yet here you are, wide awake at 3 AM, brain already cycling through ...