🚀 go-pugleaf

Josh Turner <shua@umich.edu> wrote:

>Walt Horning wrote:
>> 
>> Marco Concha <Marco.Concha@gsfc.nasa.gov> wrote:
>> 
>> >Walt Horning wrote:
>> >>
>> >> Coming down the road is a jogger. Why the hell was she not on the
>> >> sidewalk, but in the street instead???
>> >
>> >
>> >1)  Because the street is paved with asphalt, which is softer and kinder
>> >to the feet and legs than the sidewalk, which is usually concrete.
>> 
>> What, is it "softer" at the microscopic level? Asphalt may be "softer"
>> to a truck, but its hardly "softer" to a human.
>>
>
>That's simply not true. Asphalt is noticeably softer than concrete even
>when walking, but its especially noticeable when jogging or running. Why
>do you think they don't make running tracks out of concrete?

Asphalt running tracks are easier to put in in the woods and parks,
not to mention cheaper. Relative to a runners impact, the pressure on
te feet is insignificant if there is any difference at all.