[quote="Mr.Buttocks":7d2e5]Get away from your Mac for 30mins and have a walk about and a bit of a stretch.[/quote:7d2e5]
Mr.Buttocks is correct, I get those base of teh skull headaches but only after an extended stint on my pc.
If you want a second opinion I can give you a refferal to Doctor Duffy.
Shortness of breath and chest aches caused by anxiety. Oh, and being ridiculously aware of your heartbeat as well...
My mate started to get those symptoms regularly - He ended up quitting smoking weed because of it.... I get it every now and then when I'm stoned, but I just have another cone and it tends to fade out.