[AndrewS]

It's not waking up that's hard; the problem is getting to sleep. The symptoms in the article definitely apply to me (and I'm working on resolving them).

Yesterday I woke up much earlier than I'd like (via alarm clock) in the hope of being tired enough to get to sleep before midnight last night. I struggled to concentrate and keep my eyes focused all day, but I was still awake until 3am.

I hate spending 12 hours in bed and get up feeling like I've had 6 hours of actual sleep. It's hard to understand if you don't have this problem yourself.