Men's Fitness really put Bob Harper to the test for his cover shoot. The Biggest Loser trainer had to do a real workout for the photo shoot and while it was hard work, Bob was up for the challenge.
"I've got to tell you, they've been working me out. This was supposed to be a photo shoot," Bob told Men's Fitness with a laugh.
Bob had to demonstrate his workout routine and discussed his strengths and weaknesses. His biggest weakness is pull-ups.
"It's hard work trying to look good for the cover of Men's Fitness!" he said.
OK! INTERVIEW: ALISON SWEENEY & BOB HARPER
Smart Success is Bob's new line of weight-loss kits that includes workouts, supplements, cleanses and motivational tips. For those who don't get to be on The Biggest Loser, there are other options to help get motivated!
He explained, "Sometimes we need that extra boost and motivation to kick start any diet."
Watch a behind-the-scenes video of Bob's cover shoot with Men's Fitness, below.