My guest this week is David Hauser, a serial entrepreneur, speaker, and inspiring author who’s best known as co-founder and CEO of Grasshopper, the virtual telephone service acquired by Citrix for $176 million. Today, he’s shifted his optimisation focus to the world of health & fitness, sharing his own journey of transformation in the book Unstoppable: 4 Steps to Transform Your Life. In his book, David documents the micro-adjustments he made to his own lifestyle, busting myths around fad dieting and trendy workouts. Today we’ll hear some of the most important lessons he’s learned along the way, as well as the lifestyle changes we can each make to achieve optimal health.