This is a very different discussion and I believe that many of us are unaware of this fact. It is very simple fact, yet, most often we forget to observe this, whenever we watch any track and field event, in specific, running.We just watch the speed in which the athletes run, but fail to notice one thing? In any track and field event runners run in counter clockwise direction.So let us discuss the reason behind this.
Really I was unaware of this fact, until i read about this fact in a book. It is true that all the runners in athletics runs only in a counter clockwise direction and you can notice that there is only left turns on their path( usually when it is 400 m, 800 m or more, you can see that the runners have to cover more laps and on their way they have only left turns).Well friends, don't confuse which is clockwise and counter clockwise. just imagine the situation, as such you are watching the runners, sitting in the stadium.Then you can clear understand that the runners run in counter clockwise direction all time ( i.e for example... opposite to the direction, in wish you brush your teeth, if you are a right handed ). Still you are confused, you can watch the video( Usain Bolt's 100 meter final at Olympics ) below which explains the direction (counter clockwise), in which the runners usually run.
So I guess, by this time you are clear about the direction in which the runners run.So let us see the reason why runners always run in the counter clockwise direction. The reason is simple and it is also based on the structure of the human body. The most precious part of any human body is heart and it is located on the left side of the body. So running in the anticlockwise direction ensures that the centrifugal force force in the body to act from left to right and as a result we can say that the blood circulation is very good.
The principal vein carrying blood to the hear is known as Superior Venecava, and it takes the heart aided by heart suction and more importantly this vein carries deoxygenated blood from the upper half of the body to the heart's right atrium
So this centrifugal force, due to running in counter clockwise direction, will helps this and also increase the blood circulation and it does not make the athlete tired very soon. On the other hand running in clockwise direction, will make the centrifugal force to impede suction and it tires athletes.It is also said that, when an athlete runs in counter clockwise direction, he encounters only left turns and as a matter of fact left turns are more easier than that of right turns.I guess this fact would have helped you to know something interesting and i also thank for all those who actually find the reason for runners running in counter clockwise direction.