Buzzwords, De-buzzed: 10 Other Ways to Say running surfaces
http://hectornfnc145.huicopper.com/9-signs-you-need-help-with-running-tracks
Asphalt - Now you would think that asphalt is simply as bad as concrete, however it is not. It's actually about 8 times "softer". The real issue with running on asphalt roadways is not the firmness, however the