Sanjay Dutt, Ranbir Kapoor

Sanjay Dutt’s biopic is probably going to be the most challenging project in Ranbir Kapoor‘s career so far. He has started undergoing rigorous training sessions and will be seen in a drastically different shape.

As per reports, Ranbir has gained 13 kg of pure muscle, in order to look credible as a young Dutt. Celebrity fitness trainer Kunal Gir who was behind Rana Daggubati’s envious body in ‘Baahubali’, came on board to train Ranbir. (Also Read: Ranbir Kapoor and Saif Ali Khan are bonding over THESE things)

The actor will be portraying three looks of Dutt; the beefy look during his young days, the lean look during 90s, and finally a less-familiar look during his days of rehabilitation from drug addiction. At present, beefing up is in progress for him.

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“Ranbir has an hour-and-a-half of intense work out sessions per day. It’s a big challenge to bulk him up but he’s committed to do whatever needs to be done. He wakes up at 3 am, has a protein shake and goes back to sleep,” Kunal tells a leading daily.

Sounds like too much of dedication, right? Let’s wait and see how it unfolds.