There’s been a recent spate of young healthy athletes dying of sudden cardiac arrest which has prompted experts to believe that that rigorous physical activity caused the heart disease. There’s a belief that extreme physical exercise is bad for the heart. However a recent study suggests that cause of these deaths is hidden heart disease and not physical exercise. One such athlete was former Bolton midfielder Fabrice Muamba who suffered a cardiac arrest during a FA cup match between Bolton and Tottenham Hotspurs. His heart had stopped for an astonishing 78 minutes but the doctors somehow managed to save him.