I'm glad I don't have that problem. I love bread in all its forms and aspects. In fact, I can't think of any food that actively disagrees the way you describe, except for something I ate in Mexico once, but that's another story.
It is my firm belief that a solid 7-8 hours of uninterrupted sleep will solve many problems that people suffer from on a daily basis. Fatigue, inability to concentrate, irritability, lack of stamina, headache. You name it.
The need for sleep is built into us at the cellular level, and we suffer without it.
I actually did myself as well before discovering the problem. When going for long periods without it, I stop missing it. I actually recall that as a kid, I didn't really like bread. Perhaps I instinctively knew better as a kid and trained myself to eat bread as an adult?
Regarding sleep, I agree. Unfortuanately, I've had trouble sleeping my whole life. Haven't yet found the solution, but please anybody reading this, no tips. I've tried them already.