Waking Up at 4 A.M. Every Day Is the Key to Success. Or to Getting a Cold.
Tim Cook, the C.E.O. of Apple, rises a little before 4 a.m. every day. President Trump wrote in his 2004 book that he only needs four hours of sleep a night. David Cush, the former Virgin America C.E.O., has said that he wakes up at 4:15. And Jennifer Aniston wakes up at around 4:30 to…