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The actor is no stranger to the gym.
How Don Saladino turned the actor into a demon hunter.
The 'Stranger Things' actor went from flabby to fearsome.
Celebrities: They need gym motivation just like us.
Get a behind-the-scenes look.
The 38-year-old music star's 'get out and do shit' workout routine.
To play the Norse god of thunder, Hemsworth hit the gym hard.
How the 'Man of Steel' got huge.