God has given us thousands of arteries in the heart. The three main coronary arteries first give origin to about 10 branches which in turn give rise to 100 branches and the hundreds give thousands of branches. These branches are called Capillaries. They all are connected to each other and can give or receive blood from each other. These channels can be a good source of blood to heart muscles when some of the major or minor arteries get blocked. If, some how, these channels can open up or made broader, the deprived heart muscles can get adequate blood supply. This can be called a Natural Bypass. Scientifically this treatment can be called "Pneumatically Assisted Natural Bypass" or "PAN Bypass. These natural channels are very much present in sports persons or athletes. As they do a lot of exercises throughout their career, the heart muscle develop these capillaries into broader tubes? Once these tubes are developed the athletes do not get angina even if they develop blockages to the extent of 80-90%. Their heart muscles do not die even if they suffer from a 100% blockage.