wow I thought I was alone with this problem,
I have had the exact same thing for going on 3 years now, I cant complete my yawns and it gets worse as the day progresses, when i do get a real one its like heaven, I know i sound like a yawn junkie but Its a pain in the ass, I had to leave my job as it was affecting me so bad, the docs don't know what the hells going on I've had sleep studies and tests all came back good, but I don't feel like its in my head its a physical reality for me and it is more than a nuisance, it gives me this full on fatigue feeling from the bottom of my lungs like a weight on my chest to the top of my head behind my eyes kinda, basically it totally drains me, anyway thats my sob story and I'd give my left arm for a cure. or at least a diagnostic. but the fact that i am not alone with this is a small load off my mind thanks.
sorry dont know why that posted twice