Oxygen is fine here too. Between 97% and 100%, perfect. But my Co2 is way too low (not measured in sleep studies), and that makes it impossible for the oxygen to be transported the right way to muscles. In pulsoxymetrie (what they use in sleep study) they look at the oxygen in your blood, not muscles. Well, I will see how it all turns out. Right at the moment my leg pain is really bad and my arm is vibrating again. I feel I tense it, hubby can actually feel it vibrating too, but I cannot really release it. If I concentrate a lot, I can loosen it for 10 sec or so, damned, I really have no control over it..