Since a week I'm the proud owner of the Philips Wake-Up Light. It helps me wake-up.
A lot of people are using music to wake-up, I was used to this also. But from now I'm getting awake by some sort of sunset. Half an hour before wake-up time the light gradually increases. The light has to fall on your eyes to send some kind of message to your brain. And if you cannot get awake by only the light it also starts with a chosen sound on wake-up time.
But how does it work for me. Last week I awoke three times from only the light and two times I awoke after hearing some virtual birds. Besides this I felt a lot more awake on the early hours of the day. I just have thrown away my old alarm clock, let's hope the Wake Up Light keeps working.