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Unscripted: Joe Kernen's Biggest Loss

He's been called The Hair, The Kahuna and now – perhaps he'll be called The Buff one?

Joe Kernen, the co-anchor of CNBC's Squawk Box is ready for his summer close-up after dropping some major pounds.

CNBC's Brian Steel caught up with Joe just off the Squawk Box set and got him to outline how he did it.

The secret: a combination of swimming, a low-carb diet and something called the "dreadmill."

Kernen shares his success story in our new series CNBC Unscripted.

By CNBC's Gloria McDonough-Taub