In a recent post, I mentioned a number of celebrities that follow the Tracy Anderson Method. After reading Movie Star Workouts on InStyle.com this weekend I was reminded of another trainer-to-the-stars whose philosophy I think is great: Harley Pasternak with his “5-Factor” approach (his famous clientele includes Megan Fox, Eva Mendes, Lady Gaga, Katy Perry, and Jennifer Hudson).

I bought his book, 5-Factor Fitness, a few years ago and love the simplicity of the 5-Factor workout: 5 days a week, following a 5-phase program, with 5 minutes per phase for a total of 25 minutes. And in The 5-Factor Diet, he suggests eating, you guessed it, 5 times a day using 5 main ingredients per recipe that require 5 minutes of prep time.

He recently spoke to Elle.com about his new book, The 5-Factor World Diet, which explores the reasons why many other countries, including Sweden and Japan, don’t have the same struggle with obesity that we have in North America.

Check out the video below where he talks about his alma mater, the University of Toronto.