![Matt Walker on Twitter: "Adopting a polyphasic sleep practice, such as that of the "Uberman" schedule, is associated with worse sleep, worse task performance, worse mood, and worse mental and physical health Matt Walker on Twitter: "Adopting a polyphasic sleep practice, such as that of the "Uberman" schedule, is associated with worse sleep, worse task performance, worse mood, and worse mental and physical health](https://pbs.twimg.com/media/E1YUC0sUUAMYejN.png)
Matt Walker on Twitter: "Adopting a polyphasic sleep practice, such as that of the "Uberman" schedule, is associated with worse sleep, worse task performance, worse mood, and worse mental and physical health
![The Ultimate Guide to Polyphasic Sleep: How I Doubled my Energy by Sleeping only 5 Hours a Day - OpenWorld Magazine The Ultimate Guide to Polyphasic Sleep: How I Doubled my Energy by Sleeping only 5 Hours a Day - OpenWorld Magazine](https://openworldmag.com/wp-content/uploads/2015/11/biphasic-and-everyman.jpg)
The Ultimate Guide to Polyphasic Sleep: How I Doubled my Energy by Sleeping only 5 Hours a Day - OpenWorld Magazine
![The Ultimate Guide to Polyphasic Sleep: How I Doubled my Energy by Sleeping only 5 Hours a Day - OpenWorld Magazine The Ultimate Guide to Polyphasic Sleep: How I Doubled my Energy by Sleeping only 5 Hours a Day - OpenWorld Magazine](https://openworldmag.com/wp-content/uploads/2015/11/polyphasic-charts.jpg)