Does sleeping more or not work well?

Sleep is essential for humans to maintain health and recharge energy after a tiring day. For successful entrepreneurs around the world, do they spend hours a day sleeping?

1. Jack Dorsey - Founder of Twitter & CEO Square

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Founder Twitter sleeps 4-5 hours per night.

Dorsey says he spends 16-20 hours a day at Twitter and Square. He followed this schedule every day and for a long time. Dorsey even got up early at 5:30 to run, he slept about 4-5 hours per night.

2. Mark Zuckerberg - Facebook founder

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Facebook founder only has 5 hours / day to sleep.

Zuckerberg spent about 5 hours a day sleeping and he didn't even want to waste time on dressing (he had dozens of identical gray T-shirts in the closet).

3. Bill Gates - Founder & former Microsoft CEO

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The world's richest billionaire only sleeps 6 hours / day.

This American inventor, computer programmer, investor, philanthropist and business tycoon is one of the most successful people in the world. He only slept 6 hours a day.

4. Marissa Mayer - Yahoo CEO

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Yahoo's CEO sleeps 4-6 hours a day.

Marissa won a lot of popularity when she worked at Google at about 130 hours per week. She spends about 4-6 hours a day sleeping.

5. Elon Musk - Founder of SpaceX & Tesla Motor

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Elon Musk set aside 6 hours / day to sleep.

Elon Musk is an South African-born inventor, entrepreneur and billionaire. He is best known for creating SpaceX and co-founder of Tesla Motors and PayPal. The 43-year-old businessman in an interview on reddit shared that he spends about 6 hours a day sleeping.

6. Jeff Bezos - Amazon founder

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The Amazon boss only feels refreshed when he sleeps 8 hours a day.

Amazon's founder thinks he only feels refreshed if he sleeps 8 hours a day. It makes him feel full of energy and is better at getting enough sleep. In addition, he often avoided early morning meetings to spend time with his family.