Mark Cuban reveals his productivity hack — and everyone can use it

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One of our biggest series this year is Power Hours, an inside look at the daily routines of top executives, founders, and creatives across industries. We want to understand what makes these people tick: why one wakes up at 4:15 a.m. to hydrate and meditate, another runs a 10K after arriving at the office, and a third moonlights as a Lyft driver.