Writing a stupid question.
Its purpose is to wake people up from sleep or to warn them it's time to do something.
Armor for Sleep was an American rock band back in 2001 until they disbanded in 2009. Their purpose was blending alternative rock with emo music, as well as dream pop.
It can help diagnose sleep apnea, narcolepsy, parasomnias, and seizures.
The formal name for a sleep expert is a somnologist. Somnology is the scientific study of sleep in human beings. It is intended for the purpose of helping or curing sleep disorders such as insomnia. Somnologists study sleep patterns by sleep diaries, sleep questionnaires, actigraphy, physical examination and polysomnography.
The Mayo Clinic Diet is a weight loss & lifestyle program that was designed by the experts at the Mayo Clinic. The purpose is to help you lose weight by teaching healthy eating and habits to develop and healthy lifestyle. cutt.ly/ih2t3t1
Cribs, from Pottery Barn or any other furniture store, are used for one purpose--to hold a baby. Cribs are where babies sleep. They sleep in cribs because beds are too dangerous.
The purpose of using blackout blinds is if one wants to completely black out a room. It is great if one wants to watch a movie or wants to sleep without being lit on by the sun.
Clonidine is sometimes used for that purpose, particularly with ADHD. Here's a reference: http://www.ncbi.nlm.nih.gov/pubmed/8935206
One can sleep in a union suit but it's not made for this purpose -- it's intended to be an undergarment worn in cold weather
A fairy tale usually has one of two or both of these purposes. To put a child to sleep, or to give a moral, the lesson of a story.
It allows more beds to fit on the same floor space, allowing more people to sleep in the same room.