15 Times actors went on a strict diet for a role

3) Natalie Portman – Black Swan (2010)

Natalie Portman, to prepare for her lean and toned body role in Black Swan, had adopted a plant-based, nutrient-rich diet. Portman had worked with a nutritionist to ensure her diet included a lot of vegetables, legumes, and grains. Her diet was aimed at providing her with energy for the tough ballet training without compromising her health. The actress followed a disciplined exercise routine, so her strength and flexibility would not be compromised; meanwhile, her diet remained clean. Portman's adherence to this plant-based lifestyle went beyond the need for transformation in her physical being because it also indicated discipline and dedication to this highly challenging role.