By Hindustan Times

New Delhi, Oct. 21 -- Hrithik Roshan's upper torso is fabulous; his muscles broad and well built. That agile lean bod didn't come overnight for Bollywood's blue-eyed hero. "Commitment is Hrithik's key to fitness," says Satyajit Chaurasia, the fitness instructor who has been training Roshan for the last eight years.

Eating junk

For a person like him who absolutely worships fitness, essaying the role of a paraplegic magician in Sanjay Leela Bhansali's Guzaarish was a challenge. "He had to give up regular exercising for two months. Out of habit, he would still gym for 2 days a week but with lower intensity. To gain eight kilos in two months, he ate all sorts of junk food including one vadapav for every meal, pizza, samosas, sweets and chocolates," says Chaurasia. Losing 8 kilos in 40 days Chaurasia says, "Since Roshan has been working out for almost 15 years, his muscle memory is fantastic. His metabolism is high, so with regular exercise and a strict diet he was able to lose 8 kilos in 40 days."

"A constant regime of one hour cardio and another half an hour stretches and exercises for abs was followed every morning," says Chaurasia. "We did concentrated exercises for one or two body parts every day for one and half hour every evening." (See box) After the exercises he would do 500-1000 times skipping for ten minutes everyday.

Follows international fitness trends

"Roshan is always open to trying new techniques and style. He follows fitness trends worldwide and reads international magazines on the topic. Exploring new trends and inculcating them in his regime gives him a mental boost and excitement while training. In the gym, he is like a school kid. He maintains a daily journal of his exercise routine." Monitoring results "He uses a Polar watch that can be tied on the wrist. The watch gives a calorie count and pulse rate. On the watch, he can look at his entire year's work out results."