my normal routine, when i shave, is to shave in the morning after a shower and before breakfast. And have coffee with breakfast.
Yesterday i had extra time (taking vacation for spring break :D) so i had a cup of coffee before my shower and without eating anything.
I could not believe how shaky my hand was for the shave! I have been a 2-5 cup a day person for years, But I guess my system cant handle it on an empty stomach, wow.