WTF is this about? Yesterday I was at the end of my workout, I was in the middle of supersetting lunges and SL deadlifts and I just suddenly started yawning uncontrollably. And I don't mean a sleepy yean or even a "shit this thread is boring" yeawn, I mean a proper face splitting gasping yawn. It went on for ages, I could keep it in while I was lifting but in my rest periods I looked like a right gimp.
Anyone had this happen to them? What's going on?