Chris Hemsworth is unrecognizable after embarking on intense diet for new movie(Photo)

He is known to have one of the best physiques in the world.But ,Avengers star Chris Hemsworth  looked shockingly gaunt in an Instagram selfie on sunday after embarking on an intense 500-calorie a day diet ahead of his new film. He wrote

'Just tried a new diet/training program called "Lost At Sea." Wouldn't recommend it,' 

He slimmed down for the movie , In the Heart of the Sea.His character is a sailor stranded at sea with the other crew for 90 days.