I have heard mostly that walks ourside are okay. But if the virus lives in air for 3 hours? What about opening gates, leaning on things to tie one's shoelace, picking up crap and putting it into a bin (a surface someone else may have touched, 9 hours it can survive on that)? Passing people in street?
I like to run with my dog. Urban setting but long stretches of greenery, easy to not see people and stay a safe distance away. I'm not isolating but I'm only going outside to go to work, nothing else. If it's totally safe I'll still run with my dog but I'm unsure.