At present I'm a night-owl. However, I'd dearly like to change.
One of the problems is obvious - going to bed earlier. But I'll ignore that for this question.
The question is - if I want to wake at 5am (or even 6) - I struggle with alarm clocks. I sometimes even set 3 of them to make sure I wake. The problem with that is others in the house hear them. I don't want to wake others at 5am. So what silent methods are there to wake up? The 'vibrate' mode on my cellphone is not enough, sadly (he says from experience).