Five of the fittest CEOs in the world

Despite his hectic schedule, Dorsey makes it a point to work out everyday. He wakes up at 5 am daily and follows it with 30 minutes of meditation and then moves on to doing three sets of the scientific 7-minute-workout.

One thing many people may not know about Tim Cook is the fact that he's a fitness junkie. He pursues his two hobbies- cycling and hiking regularly apart from waking up at 4.30 am to vist the gym, 5 days of the week.

The younger Ambani's love-affair with running started way back in 2003 when he was preparing for the Boston marathon. Since then, he has not only been a regular at the Standards Chartered Mumbai Marathon but also at various international marathons. Moreover, he sticks to a strict schedule of running over 10 kms every morning.

When it comes to fitness, the founder of Facebook leaves no stone unturned. As part of his New Year's resolution, he had pledged to run 365 miles in 2016 and that's not even the most awe-inspiring part. The overachiever that he is, Zuckerberg finished this challenge five months ahead of schedule and has since then started training for a triathlon.