This is another post about my sleeping patterns, so if you don’t want to read about it, you can move on to the next thing in your reader now.

I’ve always had an internal alarm clock that lets me wake up right before the electronic version goes off. I’ve even on occasion been able to look at the clock just before going to sleep, think about when I wanted to wake up, and “set” my internal alarm clock for the next day.

The last few years this internal clock has been broken because of my sleep apnea. In the few instances it would wake me up, I was so tired that I’d go right back to sleep, waking up later and finding that the real alarm clock had been beeping for 20 minutes straight.

Since the CPAP came into my life, this nifty feature of my brain has been working again. I don’t know if I’ll still be able to calibrate it, but I’ll take what I can get.