@tahiristan, it's such a mystery isn't it? Even though we *feel* the lack of air in our lungs, there clearly is not an actual lack of air or oxygen since we are still functioning normally. But the feeling is so real. Sometimes I do wake up with it bothering me some, but otherwise am able to get a normal nights rest. So even though there is something physical there that is a mystery, there is also a mental aspect to it that perhaps our minds are making it out to be worse than it is somehow. Especially in the beginning for me it was a mental battle, but after I kept telling myself over time that I am fine and that this won't kill me, who knows- maybe that contributed to a lessening of the symptoms.