15. Jim Carrey – The Grinch

Jim Carrey brought Dr. Seuss’s iconic character to life in How the Grinch Stole Christmas, but the process was far from merry. Carrey endured hours of grueling makeup and prosthetics, describing the experience as “being buried alive every day.” The difficult physical transformation took a toll on his patience and well-being. Carrey has since vowed never to undergo such an ordeal again, reflecting on the psychological strain it caused. He even required special training to withstand the discomfort. Read more about his challenging experience in this TODAY article.