How did Nayanatara manage to slim down?

Nayantara is looking hot and rocking in her new slim avatar. How did she manage to slim down like this?

The secret behind Nayan's stunning looks is Vishal, her co-star in Salute. Since Vishal needed a 6 pack abs for his role in 'Salute', he built up his body under the guidance of a trainer Prasad. Impressed by Vishal's appearance, Nayantara asked him the secret behind his new looks, and he introduced her to Prasad.

Prasad helped her shape up to such an extent that she feels more energy flow as well as flexibility of movement and that is for all to see in 'Salute,' especially in the dance moves.