After been rushed to hos twice in 6weeksh with respitary failure it was discovered that my c.o.p.d was in part caused by to much carbon dioxide in my blood. I left the hospital with a nippy machine, this super little ventilator removes the carbon dioxide when I breathe out and the good air when I inhale. I am supposed to sleep with a full mask on 6 hours a night and use it if I go for a doze during the day. When I come off the nippy I feel great breathing good head clear, my problem is I find it nearly impossible to sleep. I have been on the machine for 3 months and would ask the community if I get the same benefit awake as I would asleep, I know the breathing slows down when asleep.