Recently when I'm hungry, I start to get a headache. Before my stomach just did its thing and got angry at me for not filling it, but it seems like it and my head joined forces to make me eat. After I eat, my headaches go away. What's the deal? Could it be related to increased biking? I'm not necessarally biking more miles, but I am increasing my work load. I've started real training (LT, interval, sprints, endurance, etc...), so I do suspect that it's related. But why? Could I possibly not be getting enough nutrients because I haven't compensated enough for my increased biking?