When I work out I seem to get really bad headaches. The thing is, I seem to get them when I'm straining myself. I'm pretty sure I'm breathing right and trying to relax when I do my reps. I've been working out for about 3 1/2 months and i just started getting these headaches about a week ago. And the thing is on day 1 of wbb #1 of the week I started getting the headaches I strained myself but didnt get the headaches, but on day 3, leg day, it started. Now this week I got headaches on day 1 as well. Do any of you guys know what might be causing this?