Matt Damon reveals his arms belong to female stunt double

People watched a movie called The Odyssey and noticed that the actor Matt Damon looked very strong, with big arms.

Everyone thought Matt had been working out really hard.

But Matt told everyone a secret: the arms on screen were not his.

They belonged to a woman named Devyn Dalton, who does stunts for actors in movies.

Devyn is called a stunt double, which means she does the tricky physical parts that actors cannot do.

Devyn has been doing stunts since 2011 and used to be a dancer.

Only about 20 out of 100 Hollywood stunt performers are women, so her job was unusual.

Devyn said her job is to be invisible, so the audience thinks it is the actor on screen.

Matt said Devyn has 'the greatest arms I have ever seen,' and for a stunt performer, being praised like that is a very big deal.

After that, Devyn's phone was full of messages from friends, and she was very surprised.