Calling All Morning Runners

Hi Moms--

I'm looking for some advice on running in the very early hours of the morning. Basically I want to be able to run at 5ish am but I'm not sure how to start. Of course motivation is always an issue that early but I am also stiff (40 being only 1 yr away) plus I'm really hungry when I wake up but I don't like to eat a ton before I run. So best advice for quickly working out the kinks and how you handle early morning nutrition. Motivation ideas wouldn't hurt either. Thanks!