Jeff Horowitz is an author, editor, speaker, certified triathlon, running, and cycling coach, as well as a personal trainer, with over 25 years experience in the fitness industry. Formerly a practicing attorney, Jeff quit law to share his passion for endurance sport and healthy living. His books include Quick Strength For Runners (Velo Press, 2013), Smart Marathon Training - Run Your Best Without Running Yourself Ragged (Velo Press, 2011), Ageless Strength (Velo Press 2013), and My First 100 Marathons; 2,620 Miles With An Obsessive Runner (Skyhorse Press, 2008). He has been published in the New Yorker, Competitor magazine - for which he was also the mid-Atlantic editor - Running Times, and Marathon & Beyond. Jeff was also the program director for sport development programs serving at-risk youth, a race director, and the head coach for several charity fund-raising running programs, He also teaches running, cycling, and strength training at George Washington University in Washington DC. Among his own endurance sports accomplishments, Jeff has run over 200 marathons, completing at least one marathon in every state and on six continents, including Antarctica. He lives in Washington DC with his wife, the artist and teacher Stephanie Kay, and their son Alex.