There are both pros and cons to both running on concrete VS running on asphalt. Concrete is harder, therefore giving you a greater chance of injury, but is it really that much harder? A concrete sidewalk is usually flat, whereas most asphalt roads are slightly crowned in the middle, meaning you will be running on an incline with your right foot slightly higher than your left (if running on left side of road). This could also lead to injuries. So, you have two surfaces that could lead to injury. Neither is ideal. You could do what I do sometimes and run on the grass off the sidewalk usually in people's yards. Sometimes there is also a narrow strip of grass between the sidewalk and the curb. Whenever possible it is always better to run in the grass than either the sidewalk or the street.
Alan _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com
