My first thought is "What did you eat?" It sounds like it wasn't enough food for you when doing such a high intensity work out. My next thought is "Are you thirsty?" because the stomach will growl when we are dehydrated. Maybe add a protein drink to whatever you are already eating for breakfast?

I've stopped eating some foods because they just don't fill me up beyond an hour and, like you, I would just suffer through feeling hungry. I have been experimenting with different breakfasts and lunches to see what fills me up and is still nutritionally balanced. I have almost perfected my lunch so next I will really concentrate on breakfast. Hopefully you can find the right nutritionally balanced breakfast to power you through a workout and the rest of your morning.

Maybe... I personally thought I ate plenty. Maybe I was thirsty... In any case, I had half a protein bar at 8am. Anyone can judge me all they want, but I really needed it. I was fading fast.

If your body is telling you you are hungry, EAT!! Do not let what your brain is telling you takeover- your body knows what you need.

If your stomach is growling, you need to eat. There are many options that are healthy and nutritious and with the right balance of protein and complex carbs, you can stay fuller and satiated longer......

I guess... the problem is that I'm a pre-diabetic, so I'm very cautious about carb counts. Every nutritionist I've worked with has told me I don't eat enough, but I'm so terrified of my prediabetes becoming full-blown diabetes that I always err on the side of too little.