When John Goodman stepped out on the red carpet for the Trumbo premiere last month, fans were shocked at the 63-year-old’s weight loss.
A far cry from his heaviest, when he weight 400lb, the actor - who voiced Sully in Monsters Inc - looked trim, healthy, and happy.
But it has now been revealed that his weight loss was not down to a crash diet or fad healthy eating tip.
Speaking to The New York Post, fitness trainer Mackie Shilstone explained that the results were achieved gradually and safely with a “Mediterranean-style eating plan”, which focuses on eating fish, olive oil, avocado, vegetables and fruit.
This, added to John’s decision to stop drinking alcohol in 2007, helped him to shed pounds very quickly.
”This didn’t happen overnight — it’s been an ongoing process,“ Mackie told The New York Post.
”There needs to be strategic planning. This time, he really wanted to do it.
"Goodman’'s success lay in the way he changed his life these past two years."
Mackie also revealed that John has been exercising regularly - and aiming to walk between 10,000 to 12,000 steps per day.