I don't know what it is, but I get serious headaches while doing push ups. It doesn't happen everytime i do push ups, but often enough to make it a problem.
I drink plenty of water, Im positive I've got the correct poster, and I even do a warm up of 10 pushups to make sure I get the blood flowing, but nothing seems to work.
Get your blood pressure checked
>>42308764
I used to get headaches from pullups. Recently while doing shoulder press I got a severe throbbing pain in the back of my neck leading up to the back of my head that felt almost like a migraine. Doc said it's likely tight neck muscles or could be a pinched nerve. I got a prescription for anti inflammatory cream for the back of my neck which has helped,(I apply it pre workout and post.) but I'm going in for a CAT scan just to be certain. Use voltaren or some other anti inflammatory cream on your the back of your neck and it may help.