Why would 5 otherwise sane and behaviourially normal Daiichi Sankyo staff attempt to run half a marathon across Oxfordshire hills through knee-high, thick mud, swim through ice-filled skips, attempt to climb obstacles higher than the average house, crawl under barbed wire, jump through hoops of flaming fire before running, exhausted through high-voltage electric fencing?...

...To raise as much money as possible for people with atrial fibrillation. 

Please help us make a difference to people's lives as we attempt to keep hold of ours