4. Dwayne “The Rock” Johnson

Female celebrities are not the only ones who go to extremes with their diets. Ex-professional wrestler and Hollywood action star Dwayne “The Rock” Johnson raised his caloric intake to Herculean levels to bulk-up for his role as the Greek demigod Hercules. Johnson ate 10 pounds of food over the course of 7 meals every day while training for the role. He devoured an amazing 5,165 calories a day.
5. Ashton Kutcher

Deceased Apple founder Steve Jobs was reportedly a fruitarian which means his diet solely consisted of fruits and nuts. When Ashton Kutcher landed the role of the tech legend in a feature film biopic, the former That ’70s Show star decided to adopt the diet as well. It did not go so well.
Reportedly, the diet landed Kutcher in the hospital with pancreatic problems. Whether or not Jobs was a true fruitarian is up for debate, but most experts agree it is virtually impossible to get all the nutrients a healthy body needs from just fruits and nuts.
Can you guess which star of The Voice made the list…?