Sleep on It: Design in the Subconscious Brain
birds, circadian clock, Darwinism, Ernst Haeckel, evolutionists, firefighters, fruit flies, functional information, humans, infants, insects, Intelligent Design, mammals, natural selection, neural signaling, neurons, Neuroscience & Mind, NREM, phylogeny, rapid eye movement, rats, reptiles, roundworms, Science Advances, sleep, zebra finches
An international team reasoned there had to be a purpose for sleep. In one of the largest datasets ever collected, they believe they found two functions. Source