For Tim Cook, Waking Up At 4:30 A.M. Is Sleeping In

03/09/2015 09:40 am ET | Updated Mar 09, 2015

For Apple CEO Tim Cook, "sleeping in" means waking up at 4:30 a.m. After all, that's about 45 minutes later than usual.

He reminded us of his sleeping habit with this Tweet on Monday morning:

Cook was gearing up for an event later on Monday, at which Apple is expected to unveil details about its new smart watch.

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