Matt Damon feels like a fake whenever he's shooting action sequences in
movies - because his big brother is an endurance sports star.
The movie star was seen fighting and performing his own stunts in THE
Bourne Identity, but he insists it's nothing compared to what his brother
He says, "It takes like 12 hours and you get up at like six and you go out
to the lake and you watch them take off and swim two and-a-half miles.
"You stand there for 12 hours and I saw my brother like three times -
every three hours.
"It kind of brought up my own insecurity because you sit there and you
watch these men and women, who do this for 12 hours and I'm like on the side
smoking and drinking coffee."