Jeff received his undergraduate degree in exercise science from Brown University in 2005 and his masters in science from Johns Hopkins University. After graduation, he went on to run professionally, recording Olympic Trials qualifying times in the 10,000 meters and marathon.

During his years of professional running, Jeff began coaching runners and over the course of 15 years helped over 150 athletes qualify for the Boston Marathon.

His writings, youtube and podcast channels break down complicated training and nutrition concepts into actionable advice for everyday runners. His writings and research can be found in journals, magazines and across the web.

In 2019 he co-founded of MAS Edge Supplements to help bring science-backed supplements to endurance athletes.