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You Will Be Shocked To Know These 10 Successful People Who Hardly Sleep In Night
2. Jack Dorsey – Twitter Founder And Square CEO
He is one of the hard working professionals out there in the competitive world. He spends 8-10 hours at Twitter and then 8-10 hours again at Square. He follows this schedule on a regular basis. That’s not all, he even does the jogging at 5:30 am in the morning and sleep just 4-5 hours a day.