Rahul Nanda, a self-employed travel vlogger, weighed close to 110 kg, but it was never a matter of concern for the 34-year-old. He was happy being the big guy in the room. "Honestly, I never saw myself as overweight." It wasn't until a trip to Bhutan last October that Nanda did a rethink. During a hike to the iconic Tiger's Nest monastery, he found himself frequently falling short of breath. His trekking companion, who was much younger, had managed to race ahead. "On the way up, we ended up making friends with a group of trekkers. Finally, when I reached the summit, my friend tells me that the group thought I was his father!" I couldn't shake off that line from my head."

It's August. And Nanda now weighs 77 kg.