All you know is that you wake up not feeling fully refreshed.

Sometimes people just make noise. We refer them to ear/nose/throat specialists.

The person attempts to breathe, but can't. The patient often wakes up choking or gasping, but they may also snore or there may be breathing pauses before the oxygen level drops and the brain kicks in.

Anesthesia is quite remarkable. It's lost time. And you wake up kind of refreshed.

I'm a fan of the power nap. About twice a week, I'll stretch out on a little couch in my office for 20 minutes. I don't need a wake-up call; I pop right up, feeling refreshed.

I wake up every morning feeling like I have the best life.