Its when your oxygen level drops down below normal levels while you are asleep. My sister was diagnosed 10 years ago with several sleep apnea and had his tonsils, adenoids, and some of her soft pallet removed. For her and would stop breathing for up to forty or twenty seconds while she was asleep which would cause her oxygen level to drop in the 60 seconds. This is a serious disorder that can lead to death but if not treated properly as welll
