Guide to the novice running shoe

Joined group for half a year, the group posted a lot "ah,why my calf so rough." Another is: "Do you want to buy running shoes? AD binary Duoweilining what good?"
Decided to open a consolidated statement of stickers, to explain the problems of running shoes. The posts are very long, the best that we have the patience to finish. If you do not empty after reading, then the directory is as follows: the first paragraph to explain the significance of running shoes exist. The second largest segment explains the classification of the market running shoes. The third-largest segment details the various physical conditions suitable running shoes.
First: Why do I need a pair of running shoes, running shoes exist what is the significance?
I believe that the majority of the group like me, are not professional trained athletes, physical fitness is very general. In the running are the same purpose: exercise. People like us why you need a pair of running shoes? My experience can be explained very clearly.
When I started running, wearing one pair of sports shoes in Del benefits (I later identified a pair of jogging shoes). First day of running with one kilometer are not run down. Within half a month, jogging distance improved rapidly in the second week, I went about 3KM.
This time began to appear extremely serious sports injuries. About in 3KM The distance around knee began to pain. A run of the outside of the right knee hurt so badly that absolutely can not run. Do not understand anything, and when the next day is also trying to adhere completely pain can not run. So not to come back to the Internet to find out the reasons.and if you want buy cheap running shoes you can check that online shop.

A check, startled. Jogging, no matter how slow the run, will cause severe impact on the knees. The impact strength is about 3-5 times the body weight, when you running the whole person into the sky, and then landing, and then the moment the sky. Studied physics in middle school, you should know that this impulse, impulse absorption by the knee cartilage. I can not 60KG weight, the knee while running to accept the impact there around 200KG. A lot of ill-protection running enthusiasts the rest of his life under a huge knee pain torture, even walking leaning on something to move. Speech monk buddy child legs is running to run waste.
Running is to exercise, not to let the body be finished faster.
For this reason, I like this, did not exercise, the body is not too good, and not professionally trained, and now run a large amount of people, you need one thing instead of the knees to absorb the impact, protecting the bones. Running shoes, not to make you run faster, not in order to allow you to hit the world record, in order to make your treadmill when not injured.
This is the significance of the existence of the running shoe.
Running shoes how to work?
Say white running shoes work the principle is very simple. Since running the largest damage knees to absorb the shock, then they would have something to absorb the impact instead of knee cartilage structure. Accomplish this task, is the shock of running shoes.
AD, air asics the gel, NB absorb, essentially the same thing, is the elastic material, the knee cartilage deformation of the original bear to these materials to undertake the work of the knee will be less. You can imagine the running shoes into a pair of spring ...