'We started shooting for the portions where I've to look 45 on Oct 3. I've been preparing for it for a month. Earlier, I needed to look much fitter for Samar Khan's 'Shourya'. But for 'The Japanese Wife' there were many weight swings since we shot my character from his early 20s and now to 45,' Rahul told IANS.
'The Japanese Wife', based on Kunal Basu's book, is the only film of Rahul that hasn't been shot at a stretch.
'So we're taking my character through the various physical phases piecemeal. It's been tough, but finally worth it. It was the biggest challenge of my acting career.'