"If there's anyone out there who has taken extreme to a new level, its Joe De Sena - in adventure racing, in business, and ultimately in the business of adventure! Spartan Up! is must-read."

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The only skills you need to be an entrepreneur are the ability to fail, to have ideas, to sell those ideas, to execute on them, and to be persistent so even as you fail you learn and move onto the next adventure.

— James Altucher