Is Your Back Hurting From Hunching Over Your Computer? Try These Stretches. Spartan founder Joe De Sena recommends 50 repetitions.

Joseph De Sena has been an entrepreneur since his pre-teens. From selling fireworks at age eight, to starting a t-shirt business in high school, to building a multimillion-dollar pool business in college, to creating a Wall Street trading firm, De Sena is a living definition of the word “entrepreneur.” 

A full-time resident of Pittsfield, Vt., he knows what it feels like to succeed outside the office – and that’s the feeling he seeks to bring to the world’s athletes with Spartan Race. He’s competed in any extreme sports adventure he could find, testing his mental and physical endurance against nature.