Why do I get a throbbing migraine headache when I exercise?

Question

Never have had this happen before, but in my new exercise program, as soon as my heart rate jumps, I get throbbing head pain and I have to stop. The headache will last for hours, and my blood pressure is also increased for hours.

Answer 1

You have too much blood pumping to your head.  You're body can't keep up.  Try lightening up a bit and build your tolerance.  

Answer 2

headaches are caused by large amounts of blood trying to get through rather small vessels and vains, thats why when your blood pressure is increased your head hurts