If I may add some light on this topic... today I didn't have an apetite when I woke up. I then tried to go and run an intense workout like I have been doing and let me just say... It was FAR from stellar. I was fatigued almost instantly, I felt like shit, and my body hated me. Even if you eat a very small amount 20 - 30 min before you workout, it will help so much more.
Better yet, how about YOU give it a try. Don't eat when you wake up then go try to pull of an amazing workout, see how it uhm works out. Make a mental note of it. Then, the very next day eat a short while before you work out and see how your session goes. Then make a note of that. I will guarantee you the later will provide a much more intensive workout. Regardless, give it a try and let us know which one was better for YOU. Because after all, no one knows your body better than yourself, right?
Better yet, how about YOU give it a try. Don't eat when you wake up then go try to pull of an amazing workout, see how it uhm works out. Make a mental note of it. Then, the very next day eat a short while before you work out and see how your session goes. Then make a note of that. I will guarantee you the later will provide a much more intensive workout. Regardless, give it a try and let us know which one was better for YOU. Because after all, no one knows your body better than yourself, right?