Matt O’Brien is a body transformation expert, fitness industry consultant, author, and personal trainer. His passion is helping others attain a healthy mind and body through proper exercise, nutrition, and dietary supplementation. Matt began personal training professionally in 1997 in New York City and has trained corporate executives, television personalities, high fashion models, competitive athletes, and lots of “real world” people seeking results. Matt earned his Bachelor of Science degree from the US Air Force Academy (1991) and is a Certified Strength and Conditioning Specialist (CSCS).

In 2008, Matt launched the Body Trans4mations program which, in its first year alone, helped 25 people collectively lose over 1,000 pounds. In 2011, he created the sensational 28in28.com rapid weight loss program which is helping thousands of people, lose hundreds of thousands of pounds. He currently is working on his next book The Fitness Fastlane and resides in the Tampa Bay area of Florida with his wife, Hollie and son, Keegan.