A Chicago native, Sean played competitive sports at an early age, excelling through dedication and practice. He was a member of conference championship teams in hockey, football, and earned all conference honors in baseball. Sean holds a Bachelor of Arts degree from the University of San Diego where he also participated in rugby and began his studies in the Korean martial art of Tae Kwon Do. Sean received his first degree black belt the year of his graduation.

Post graduation Sean began working with Bio-Kinetics, founded by former major league pitcher Dr. Tom House. Sean served as strength and conditioning coach to numerous high school, college and professional athletes. He co-authored his first book Stronger Arms and Upper Body in 1999.

Sean accepted the position as strength and conditioning coach with the Milwaukee Brewers in 1999. One year later Sean accepted a similar position with his adopted hometown of San Diego for the Padres. During his tenure with the Padres he authored two additional books, Complete Conditioning for Martial Arts (2001) and Fit to Hit (2002). Sean also began speaking at national seminars on a host of athletic-related topics.

Sean transitioned from baseball to professional golf in late 2002, when he accepted the position of personal golf fitness trainer for Phil Mickelson. Since then Sean has traveled the world developing golf fitness programs for amateurs and professionals alike. Sean has had the opportunity to work with the likes of PGA Champion and Ryder Cup member Brad Faxon, US Open Champion Cory Pavin, PGA and Champions Tour winner Peter Jacobsen, LPGA Champion Hee Won Han, LPGA Tour winner IK Kim, 2003 PGA Champion Shaun Micheel, world renowned golf instructor Butch Harm, short game expert Dave Pelz, and Golf Digest Magazine top ten golf instructor Rick Smith.