That's strange.... Maybe from the adrenaline, or you could be breathing excessively heave. Or maybe holding your breath?
be sure to clean your colon out, you could be putting toxins back into your intestinal track,, butt for going outs ,, not going ins....
It is called Vasovagal syncope. is a common cause of dizziness, lightheadedness, and fainting. The vagus nerve is overstimulated and causes the body's blood vessels to dilate and the heart to slow down. This anti-adrenaline effect decreases the ability of the heart to pump blood upward to the brain. Without blood flow, the brain turns off. In Victorian England, when this happened because young ladies' sensibilities were easily offended, this was called a swoon.
Thanks slideruler, that explains alot of things!! I also get the same faintness from stress too. Thanks!!