Also new to the site. Sleepybeachoyster made some comments that ring true for me. My energy level is way down. Doing the slightest exercise gets me exhausted. Out of breath and very tired (weak feeling) muscles throughout my body. I have noticed that I breath shallow as well. I wake with a slight headache and "fuzziness". I do not know my prescriptive numbers but it seems to me that the pressure is much higher than when I first got the machine. Sleepyeachoyster have you learned any more about your tiredness since your posting 2 months ago? Need help! Tanks all.