Any Ideas on Headaches

[Theatrix]

I workout with my two sons and a friend of theirs. My sons are 17 and 15 and the friend is 17. We workout hard four days a week. Lately, the friend gets these headaches whenever he begins to lift heavy. They come on like clock work. The headaches get so bad that he can't lift.
Aside from telling his paents to have him checked out, I have, any ideas of what could cause this.

[SwoleCat]

Is he breathing correctly when lifting heavy? You don't want him to get a hematoma, that's for darn sure.

~SC~

[Theatrix]

I'll have to check his breathing. Good point.
BTW, no gear with these kids. Just protein. He is 150 and his protein intake is about 200g a day. He has good eating habits.

[PaRiS2005]

I agree with SC. (But how could I not?) Is he hydrating properly?

[IronFreakX]

Dehydration , low carb diets , yohimbine hcl and women cause the worst headaches