Evolutionary or adaptive theory argues

Evolutionary or adaptive theory argues that human inactivity during sleep helps us survive. If we remain stationary, we’ll stay out of trouble, especially when we’re vulnerable. Our ancestors survived by staying more or less still and avoiding accidents in the dark. Some experts take issue with this theory, contending that if survival were at stake, we’d be much better off if we were conscious and able to react to emergencies Several structures within the brain are involved with sleep. The peanut-sized hypothalamus is the hub of sleep-promoting nerve cells that affect sleep and arousal. Within this organ is the suprachiasmatic nucleus (SCN), a cluster of thousands of cells sensitive to light. They control behavioral rhythm and are vital for the sleep/wake cycle. The SCN functions even in blind people, allowing them to sense light even when they can’t see. สล็อต เว็บตรง