Five of the fittest CEOs in the world

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.

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.

Sergey Brin has perfected the art of using physical activity as a stress-buster. This fitness junkie likes taking things on the next level and enjoys skydiving, spring board diving, high flying trapeze, gymanstics and by his own admission, 'a variety of acrobatic things'. His Google employees are not left behind either as he takes them to the athletic complex for team-building exercises regularly.