Scientists have found that those who run barefoot, or in minimal footwear, tend to avoid “heel-striking,” and instead land on the ball of the foot or the middle of the foot. In so doing, these runners use the architecture of the foot and leg and some clever Newtonian physics to avoid hurtful and potentially damaging impacts, equivalent to two to three times body weight, that shod heel-strikers repeatedly experience.
One technique for proper running is to always remember to swing your arms while running. Most runners make the mistake of running with their arms at a stationary position. We runners have the tendency to hold our arms on our chest. The proper running technique is your arms should swing forwards and backwards the same as your leg movement.
Running well and running fast is a skill, not something you were born with (unless off course you are Usain Bolt or Kenenisa Bekele). And just like any other skill it can be taught.
In the following video shot at Nike naked running camp, you will see when the runners slow down, the coach or camp director shouts at them reminding them to use their arms / hands to run faster.
Warning : This video may not be suitable for minors.