Health and Fitness Experts

20 Most Controversial Figures in Health and Fitness

The following 20 people are well known for their achievements in the diet and fitness world, but not everyone agrees about the ideals they espouse
1 of 21
20 Most Controversial Figures in Health and Fitness // Tony Horton, Jillian Michaels, Lance Armstrong c Getty Images

Image: Getty Images

With all the conflicting research and pseudo-scientific claims about fitness and training techniques revealed each day, only one thing's for sure: There's more than one way to carve an ab. And as long as we all have a body to experiment on—our own—everyone's a potential expert with a strong take on what to eat, what to do, how to stay motivated and what makes results last. The figures on this list have different credentials, experience, motivation, and goals for making the world stronger, healthier, and sexier. And they all think they've got the answer. There's plenty to argue about.

Related: 10 Diet and Fitness Myths That Pack on Pounds

1 of 21