Bill Gates used to think that sleep is lazy, and competed with colleagues to get as little rest as possible

• Bill Gates said that he used to think sleeping was lazy and unnecessary when he was younger. 
• The Microsoft co-founder competed with colleagues to sleep less than five or six hours a night. 
• Now he checks his daily sleep score to maintain good brain health as he gets older. 

Bill Gates admitted to skimping on sleep during his prime years at Microsoft because he believed it was lazy and "unnecessary."

The Microsoft co-founder spoke about Alzheimer's and maintaining brain health with Seth Rogan and Lauren Miller Rogan in the first episode of his new podcast Unconfuse Me.