Night 2 was worse than night one. I was so tired last night that i fell asleep in seconds. Then woke up a few mins later when my wife put the dogs to bed. Still couldnt keep my eyes open. Put the mask on and started the machine, all that changed. Laid there wide awake for 2 more hours, exhausted, but could not sleep. Then the damn thing ramped up to 12.5 out of nowhere, while i am awake, and i couldn't breathe because it was so strong. Reset the machine and tried again for another hour until i i couldnt take it. Shut it off and i was out cold in less than 5 mins.