I have mild sleep apnea which is not treatable withCPAP or BIPAP. I sleep for 60/90/120 minutes then wake and go to sleep again sometimes soon sometimes not soon. I get no deep sleep so am not refreshed. I eventually get up about midday having been in bed for over 12 hours. Even then I am still very slow and lacking in energy. During the sand evening matters do improve a bit. Would be pleased to her from fellow sufferers.