Mark Ruffalo Reveals He Ate 1,000 Calories A Day To Lose 20 Lbs. For HBO Show
Mark Ruffalo, 52, may play both identical twin brothers in the HBO series I Know This Much Is True, but the characters can’t exactly be described as doppelgängers. This is because Mark underwent extreme weight changes to film as each brother. The most radical transformation, however, was apparent in his role as Dominick Birdsey.