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Jim Cramer reveals the secret to surviving on less than 4 hours of sleep

Jenner DealDec 15, 2015, 05:46 IST

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Jim Cramer, host of CNBC's Mad Money and co-founder of TheStreet.com, survives on less than 4 hours of sleep a night. We sat down with him during Business Insider's IGNITION conference to find out how he does it.

Produced by Jenner Deal. Camera by Graham Flanagan.

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