The "Main Tera Hero" star, who is known for her hourglass figure, said she used to walk 10,000 steps a day to shed extra weight.
"I lost almost 4 kilos in 1 month just by eliminating certain foods that I am allergic to out of my diet. And walking 10,000 steps a day! amazed," she posted on Twitter.
The American model-actress made her debut in Bollywood with Ranbir Kapoor-starrer "Rockstar" followed by "Madras Cafe" and "Main Tera Hero".
Nargis also had a supporting role in the Hollywood film "Spy".
