There are so many sleep myths that I actually had hard time choosing my ‘favourite’ three. When I started to study sleep I realized that I had false expectations in various ways. Increasing my understanding has led to more realistic expectations. This has been crucial for my healing and better sleep. You can find my top 10 myth list here if you wish to read beyond the top three listed below. Let's get started with the most obvious one. All the media scream about the must-have-8-hour-sleep every night. Is this a must? Not necessarily. Sleep requirements vary by age and by personality.