Big Sleeps is a term used to describe a long period of sleep, usually lasting for several days or weeks. It is often associated with hibernation in animals, but can also be used to describe a deep sleep in humans. The term 'COMAS' is an acronym for 'Continuous Obstructive Multiple Apneas Syndrome', which is a medical condition that causes people to experience long periods of sleep. People with this condition may experience Big Sleeps, as their bodies are unable to wake up from the deep sleep.