19 Pro Athletes With Insanely Strict Diets

These athletes run on diets very different than those of the average American. It's no coincidence many of them are among the very best at what they do.

Conor McGregor Doesn't Fool Around With His Food

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Conor McGregor Doesn\'t Fool Around With His Food

Conor McGregor takes his nutrition very seriously.

For one, the UFC fighter knows that supplements are no replacement for a healthy diet.

"I try to be really cautious about everything I put in my body—even the foods I eat. And the primary source of nutrition is food. They call them supplements because they're meant to "supplement" your already-healthy diet," McGregor told STACK.

Those foods include a lot of fish, chicken, vegetables and healthy fats.

He does not consume a lot of carbohydrates, but when he does, it's often in the form of sweet potatoes. 

He also hydrates obsessively and drinks water first thing in the morning. 

He doesn't eat "takeaways", either—or, as it's called in America, carryout food.

McGregor also shared a copy of him reading a book on the sirtfood diet recently, so there's a chance his nutrition has gotten even more strict. 

Photo Credit: Jeff Bottari/Getty Images

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Topics: FOOTBALL | BASKETBALL TRAINING | BASEBALL | DIET | NUTRITION | FOODS | MEALS | SPORTS | TRAIN | CHICKEN | FRUIT | VEGETABLES | LEBRON | SLIDESHOW