While the pre-Industrial segmented sleepers had a biphasic routine (hitting the pillow twice in a day), da Vinci and Tesla practiced the most intense example of polyphasic sleeping (bedtime more than three times in a day).

Did Leonardo da Vinci do polyphasic sleep?

Leonardo da Vinci's sleep schedule included 20-minute naps every four hours. Da Vinci followed an extreme form of a polyphasic sleep schedule called the Uberman sleep cycle, which consists of 20-minute naps every four hours.

How many hours did Leonardo da Vinci sleep?

It is believed that Leonardo da Vinci was polyphasic, to the extent that he slept for only 15 minutes every 4 hours, which adds up to only 1.5 hours of sleep in a 24-hour period. That left him with 22.5 hours a day to do his great work!