Director Guy Ritchie's new action-adventure "Fountain of Youth" did not lead its stars Natalie Portman and John Krasinski to the source of immortality, but it did take them back to the movies they grew up watching.

John Krasinski says his character's limp in action flick 'Fountain of Youth' is real, after the actor's legs locked up while running for a train stunt, but the crew offered him a surprising solution.

John Krasinski revealed in a new interview that he is shown limping in one 'Fountain of Youth' action sequence because he really was limping due to dehydration. 'My legs locked up and I run like a tin man for a train,