Answer: sleep apnea is if you stop breathing periodically during sleep. You may awaken to restart breathing up to 100 times per night.Probably you remember nothing at all about the awakenings. However, if you sleep with someone else, your sleep partner will remember a great deal about the awakenings.here are the signs and symptoms:* Frequent cessation of breathing (apnea) during sleep. Your sleep partner may notice repeated silences from your side of the bed.* Choking or gasping during sleep to get air into the lungs* Loud snoring* Sudden awakenings to restart breathing* Waking up in a sweat during the night* Feeling unrefreshed in the morning after a night’s sleep* Headaches, sore throat, or dry mouth in the mornings after waking up* Daytime sleepiness, including falling asleep at inappropriate times, such as during driving or at work* Lethargy* Rapid weight gain* Memory loss and learning difficulties* Short attention span* Poor judgment* Depression* Personality changes