running is my way to relax, no matter the speed i chose. Either jogging or sprinting. 
I like to run too, since it helps build nice calves and it is great cardio.
Of course it is  described as the world's most accessible sport.
That makes a lot of sense. Almost anyone can run and you can do it almost anywhere.
Do you involve in running as a competitive racing. It started back to the Tailteann Games in Ireland in 1829 BCE
That's such a long time ago, wow!
-mass mechanics is that changes in kinetic and potential energy within a stride occur simultaneously, with energy storage accomplished by springy tendons and passive muscle elasticity. The term running can refer to any of a variety of speeds ranging from jogging to sprinting.
It is assumed that the ancestors of humankind developed the ability to run for long distances about 2.6 million years ago, probably in order to hunt animals. Competitive running grew out of religious festivals in various areas. Records of competitive racing date back to the Tailteann Games in Ireland
and the first viable woman candidate, running against each other in the same nomination race. One South Carolina pastor lamented that he had been waiting all his life for either "first" to happen and said, "I really hate that they had to run at the same time in the same election. It just makes what should be a wonderful situation very stressful for folk like me. I never imagined you could have too much of a good thing." After the Clinton-Obama tension on this matter, one Democrat