Historians found out that our ancestors didn’t sleep like us; they had a different sleep pattern. And to say that they had better sleep quality than us is quite true. That’s because they didn’t have distractions from technology, countless properties to care, and hectic schedules.
One of the reasons they can fall asleep easily and had better sleep is because they spent a lot of time outdoors. More outdoor time means they got plenty of sunlight, which keeps their circadian rhythm tuned.
Another reason is that they went to sleep immediately after the sun went down. Sometimes, they woke up in the middle of the night to hang out around the campfire for a while. After that, they go back to sleep until dawn.
Other reasons: They slept in cool places with ventilation; they ate fresh foods; they led active lives.