You sleep during one third of your lifetime – regular good sleep is a necessity for a healthy life. As an adult, you need to sleep six to nine hours per night. If you do not get enough sleep, you will in long terms risk the recovery of your body – the brain and memory function, immune defence, hormone balance and other vital organs. Are you still tired when waking up after a night’s sleep? If so, you may suffer from sleep apnea. If you do, your breathing during sleep can be interrupted hundreds of times each night, usually without you noticing.