Is it safe to sleep for brief periods several times each day? Medically reviewed by Keri Peterson, MD Fact checked by Zerah Isaacs Individuals who are interested in a polyphasic sleep schedule may ...

Despite decades of research, scientists admit that they still have a lot to learn about sleep. In general, sleep can be ...

Polyphasic sleep involves sleeping for three or more short periods throughout the day. If you follow a polyphasic sleep schedule, you'll take several naps that give you between 2-5 hours of total ...

I don’t know why." 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 ...

Plan your sleep schedule: Instead of one long sleep session, aim for a biphasic or polyphasic sleep pattern (splitting sleep into two or more segments). A good strategy is to sleep for four-to ...