I know the Internet is full of lists with citiesâ nicknames, but I decided to make my own, composed of the worldâs most important cities, and I hope this will be useful for my readers. 1. Paris â The City of Love, The City of Light, La Ville-Lumiere. 2. Prague â The City of Hundred Spires, The Golden City, The Mother of Cities.
Sleep debt or sleep deficit is the cumulative effect of not getting enough sleep. A large sleep debt may lead to mental or physical fatigue. There are two kinds of sleep debt: the results of partial sleep deprivation and total sleep deprivation. Partial sleep deprivation occurs when a person or a lab animal sleeps too little for several days or weeks. Total sleep deprivation means being kept awake for at least 24 hours. There is debate in the scientific community over the specifics of sleep debt
a catergory of sleep disorders characterized by arousal or activation during sleep or sleep transitions; inclues sleepwalking, night terrors, sleep bruxism(teeth grinding), sleep-related eating disorder, and REM sleep behavior disorder. NREM. REM.