I've had about 8 sparring sessions and after every one I get headaches. Well, i dont get headaches on all my spars, just the ones where I get hit quite a bit. It's not like i get totally beat up, but I do get hit. On some of them, if it was a real match, I would have won. But it seems everytime i get hit during spars, I go home with headaches that night. Is taht normal, cause the headaches get pretty bad, but they go away when I wake up the next day.