What if we can run without shoes?

I was reading that it seems as per Harvard investigators, if we run without our sport shoes we can have more benefits for our health. 
This theory is based on the scientists found that those who run without shoes, fall into the front of the foot, which causes less impact on the body. When running with shoes, usually supported foot heel down, which generates a strong impact which is about two or three times the body weight.

So... are you willing to run without shoes??