Matt Damon reveals secret diet ingredient to losing 40lbs for 90s role in Courage Under Fire - OK! Magazine
![Bobby Green on Twitter: "When Matt Damon's character in "The Martian" had to lose weight, he used a body double. Christian Bale did not: https://t.co/Ga8B6350fh" / Twitter Bobby Green on Twitter: "When Matt Damon's character in "The Martian" had to lose weight, he used a body double. Christian Bale did not: https://t.co/Ga8B6350fh" / Twitter](https://pbs.twimg.com/media/CaWCl9gWwAA2v4J.jpg)
Bobby Green on Twitter: "When Matt Damon's character in "The Martian" had to lose weight, he used a body double. Christian Bale did not: https://t.co/Ga8B6350fh" / Twitter
![Did Matt Damon really lose a lot of weight during The Martian movie? Is his thin body just a computer visual effect? - Quora Did Matt Damon really lose a lot of weight during The Martian movie? Is his thin body just a computer visual effect? - Quora](https://qph.cf2.quoracdn.net/main-qimg-6538e209a91055554b8a9bde1aef9d08.webp)