Daytime Sleeping
It is well known that Leonardo da Vinci used polyphasic sleep. This implies that throughout the day, he slept 20-30 minutes every 4 hours. Why would he do anything like that? The brains of smart people work more intensively in general, meaning that they also tire out sooner. They can quickly recharge, however too. You need to “reload” your brain and sleep a little in order to keep tiredness at bay. Power naps of 20 minutes work best.

Daytime Sleeping