I was doing the endless yawning and it turned out to be low blood O2 saturation levels. Once they figured that out and solved it yawns went back to the normal type/levels (liek when I was tired)

turns out I had started to breath shallow all the time. They think it was because a flare caused some chest muscle weakness. I had to do a lot of breathing exercises with that plastic thingy they give you in the hospital (spirometer???)