I've been practicing lucid dreams for quite a while now and I'm getting pretty good at it. While I may be having a lot more lucid dreams than usual, my control in the dreams are really minimal. Somehow I'm only limited to obliterating objects (melting it, bending/twisting, reducing it to ashes) and it's quite fun (:. I can last for a certain period of time but then when there's some sort of line that I'm trying to cross from that control, I get jarred back to reality.

But then again along the process, there's some sort of gravity radiating in my head and it's really heavy and it really hurts. Most notably when I'm trying to do things that I'm still yet to be capable of. Oh and my dreams sort of have these levels of dream sequences. I might have to think again everytime I seem to 'wake up'.

My question is, why does my head hurts? And why is my control limited to certain things?