BusinessInsider: A former Goldman exec who wakes up at 4:30 a.m. to work out explains why it isn’t a struggle

Many corporate executives and successful leaders wake up before sunrise to get a jump on the day. Many, like Bill Clinton, tell of how they had to train themselves early in their careers to function on less sleep. All suggest the practice is worth the difficulty for the promise of success.

Not Marc Spilker. The former Goldman Sachs partner and now chairman of a fast-growing asset manager says he wakes up at 4:30 a.m. most mornings simply because he’s wired that way. His routine is not the result of grueling training or copious cups of coffee, but learning his biorhythms early on and knowing enough to play to his strength.

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