Could I really feel better after only one night on CPAP?

Maybe its all in my head, but I think I already feel much much better! No falling asleep at work, or at red lights. I feel like a dark cloud has been lifted! Anyone else feel better this fast?

Hi Libby: I felt much better the day I got back from my second sleep study (where I wore the CPAP). Even though I felt like I slept less that night due to the CPAP machine, I was much more refreshed during the day. Now, I have had my machine for about 4 weeks and cannot believe how much better I feel! I wouldn't consider sleeping w/o it now. It makes me wonder why I resisted getting one for years even though it was apparent I had sleep apnea. Congrats on a 'fresh' start!