Explaining a Movie on Instagram: "The Grinch prosthetics took several hours to apply each day and were so physically uncomfortable that Carrey compared the experience to torture. He reportedly struggled with claustrophobia, heat, and irritation to the point where production had to pause. Director Ron Howard brought in a former CIA torture resistance trainer to help Carrey learn coping techniques so he could endure the makeup process. With that support, Carrey stayed on the film and completed the