If you aspire to become a hero then there are many areas where you need to put in efforts. It is not just about acting, it is also about having the right personality and the attitude for people to adore you as a role model. One aspect in that is the physical shape and muscularity.
In the last decade, heroes changed from average bodies to well toned and muscular bodies. The trend came from Bollywood and got transferred to south. In Tollywood, Sunil is the best example for showing a drastic transformation. Now, even the chocolate hunk Madhavan has grown his physique.
So, how does it result in box office success? In the past also many other heroes beefed up for their roles but will it really affect the box office? It has become a common thing now to see chiseled physiques and truth remains that it just adds to the charm but doesn’t really contribute to the film’s success.