headaches when working out

[MagicNinja]

I often get headaches when working out, to the point where i will have to stop actually working out and go home and lie down.

I used to suffer migraine headaches and i feel it is closely related to a possible 'click' or something in my neck. Does anyone have any similar experiences / suggestions?

EG today i was doing dumbbell benches and at the end of the third set at the highest weight it kicked in. It's always when i am doing that last lift when i am completely exerted and then it feels like suddenly my head has been put in a trash compactor. As i said i'm thinking it might be possible strain on my neck (which is very weak) and that is causing a headache. It's very frustrating.