Pasternak is a New York Times Bestselling Author whose books include 5-Factor Fitness, 5-Factor Diet, The 5-Factor World Diet, The Body Reset Diet, The Body Reset Diet Cookbook, and 5 Pounds. Harley’s titles have attained global bestseller status, which has led to translation in 14 languages in over 25 countries around the globe.

As a fitness and nutrition specialist, Pasternak boasts the largest celebrity client roster in the industry, and has worked with the likes of Ariana Grande, Lady Gaga, Rihanna, Halle Berry, Katy Perry, Megan Fox, Robert Downey Jr., Robert Pattinson, Jessica Simpson, Gwen Stefani, Adam Levine, Kim Kardashian, John Mayer, , Alicia Keys, and Jennifer Hudson.

Harley starred on “Revenge Body with Khloe Kardashian” on E! and was a regular contributor on Good Morning America on ABC. Harley has also been featured as a judge on “Top Model” and, hosted “The Revolution” on ABC, and starred as himself in the feature film Teenage Mutant Ninja Turtles.

Pasternak has made worldwide speaking appearances in over 30 countries for a diversity of Fortune 500 companies, health and fitness organizations and government entities.

Harley Pasternak is an adjunct professor at The University of Toronto and holds a Master of Science in Exercise Physiology and Nutritional Sciences from the University of Toronto and an Honors Degree in Kinesiology from University of Western Ontario and served as an exercise and nutrition scientist for Canada’s Department of National Defense. Harley is a Toronto native and currently resides with his wife and three children in Los Angeles.