It’s hard to go back to sleep when you wake in the night

via google

Waking up in the night is one thing, but for many of us it’s not too difficult to put your head back down and nod off again quickly. However, if once you wake unexpectedly it takes you longer than 20 minutes to get back to sleep – or worse yet, you’re not able to get back to sleep at all – then you may have a problem.