after you wakeup your glycogen stores are their lowest for the day. Heavy workouts that early without eating do 3 things .. (1) you'll never be able to have workouts at peak strength, (2) your endurance will be lacking so forget forced reps, (3) your body will tap into bodyfat and muscle to overcome the lack of glycogen in the muscle - thus impacting muscle development and retention of the muscle.
Obviously, get some food in ya as soon as your feet hit the floor from the bed.
B-