Qatar resident Ziyad Rahim, head of market risk at Barwa Bank, recently broke a Guinness World Record by completing the Marathon Grand Slam in just 41 days. In the process, he set the fastest time to complete a marathon on each continent and the North Pole and smashed the previous record of 324 days, which had stood for over six years. He is also the first person in the world to complete two extreme marathons - at Antarctica (-20 degrees Celsius) and the Sahara Desert (50 degrees Celsius) - within a month. Ziyad is an ambassador for CARE, a charity educating underprivileged children in Pakistan. He says he runs to promote health and fitness and raise awareness for the less fortunate.