Obviously it is gross to spit on the sidewalk, period. I am a new runner and I do not typically ever spit. However I have had a couple circumstances since I started my running program on Aug 1st where I really had to spit. I looked around me and did not do it with anyone around and did it in the woods no where near the sidewalk. I was not carrying water and I am still working on my form so I don't know when I' ll feel comfortable carrying water. What is the etiquette around this-- is it just a flat- out "No - No "???