"i&#039;ve only used it one night so far (over the fears of having sleep apnea, and waking when i can&#039;t breathe, a pill to keep me asleep just kind of scared me but walking around sleepier and sleepier each day, i caved.  true benefits i don&#039;t know yet, but i do know last night was the first night i slept over 8 hours straight.  my machine says i still had my sleep apnea events, but they seem about the same as normal."