Picked one up 2 weeks ago. They were definitely right about it having an adjustment period. I was sore and didn’t sleep well for about a week there. Today though was an interesting experience. Normally I can’t completely wake up in the morning without resetting my alarm for a future time and plopping back into bed. This time I snapped awake right when the alarm went off (6 hours after going to sleep) went in and turned it off, then stayed up. My back does feel slightly better today too. It could be that the computer running the MP3 Alarms is all the way across the house requiring me to walk a good distance to turn it off though. Maybe I’m just too lazy to walk back in order to go to sleep.
I’m still tired though, cursed 6 hours of sleep anyway.