Some people honestly just need 4-5 hours of sleep. I used to work for Zillow and their CEO Spencer only sleeps 4-5 hours a night. It's all he needs and all he's ever done, according to people who have worked for him for a long time.
But these people are the exception not the rule. I think the reason they tend to be successful is because they are up before everyone else and have time to get a lot accomplished before they are thrown into the day with everyone else's schedules pulling on them.
But these people are the exception not the rule. I think the reason they tend to be successful is because they are up before everyone else and have time to get a lot accomplished before they are thrown into the day with everyone else's schedules pulling on them.