Weight Watchers President and CEO David Kirchhoff knows how hard it is to lose weight. He dropped a whopping 45 pounds! David is sharing all of his favorite tips and tricks in his new book, "Weight Loss Boss."

"Extra's" Mario Lopez caught up with the author on Tuesday to chat about living a healthier lifestyle, tricking yourself into eating smaller portions, and other diet tips.

Watch the interview!



“Weight Loss Boss” is available in bookstores nationwide.

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