Our ancestors got plenty of sleep. Even after the discovery of fire, it wasn’t as if they stayed up all night partying. From sunset to sunrise it was safer to huddle together and rest. Long days of hunting and gathering and otherwise working hard for every bite of food also required sufficient time to repair and recover. Studies of modern hunter-gatherers suggest it wasn’t necessarily always an uninterrupted nine or ten hours, either. It’s likely that they slept together as families or as small tribes, keeping a watch out for predators, breast-feeding the baby or just dozing in and out throughout the night. Growth hormone and melatonin were the major hormonal players. Of course, the occasional afternoon nap was also available when the urge hit, with no guilt about what else they really should have been doing.
Get plenty of quality sleep. Our lives are so hectic and full of things to do after the sun goes down that it’s often difficult to get enough sleep. Yet sleep is one of the most important factors in maintaining good health, vibrant energy and a strong immune system.