"Einstein and Donald Trump supposedly needed very little sleep which is why they could work so hard." Interestingly, I read in a magazine from my country that

"Einstein and Donald Trump supposedly needed very little sleep which is why they could work so hard." Interestingly, I read in a magazine from my country that Einstein slept at least 10 hours each day (and more if needed). So, reading your statement, I decided to search more about this typing "einstein hours of sleep" using Google. I found some links like: "... while others have been known to require 8 to 10 hours (such as Albert Einstein)." - in http://webhome.idirect.com/~readon/sleep.html http://webhome.idirect.com/~readon/sleep.html "She points out that Albert Einstein sleep nine hours a night and was still able to get plenty done." - in http://evenstaronline.com/resources.html http://evenstaronline.com/resources.html "Einstein, on the other hand, demanded 10 hours of sleep every night for himself." - in http://www.quickiesheets.com/ http://www.quickiesheets.com/ I'm not sure if this is really true, but I do believe that a lot of hard work people can easily sleep during 10 hours.