I have been using the unit since the 20th of October, 2016 – Sleep has always been an effort, I am now naturally tired by 9 pm and asleep within 10 minutes of lying down. I sleep 7 to 8 hours and awaken feeling truly refreshed. I stress enough the gift this device has given my life. My years long battle with depression is gone. I sleep like a baby. Please do your self a favor and try this unit, I promise you, you will be amazed.