Scarlett Johansson has been chowing down egg whites in a bid to get into shape. The Iron Man 2 beauty says her diet of egg-white omelets and lean turkey, paired with a punishing exercise regime has meant she is stronger, fitter and fabber than ever before — and she’s loving it! “I had to change my diet — when you are working out like that you have to feed your new body so you eat in a different way. It’s very clean,” she said. “I feel much stronger than I’ve ever felt just because I’ve had to build so much strength. “I had no choice, I had to do it — I mean you want to do these stunts and you have to be strong in order to do them.”