Polyphasic sleep

Polyphasic sleep refers to the practice of sleeping multiple times in a 24-hour period—usually more than two, in contrast to biphasic sleep (twice per day) or monophasic sleep (once per day). Check this link for more information (see here).

And I bought a great book from the person who created the Uberman schedule. Check this link for the book and explore the blog (see here).

Looks great. I will try it when I get the chance.