It is a popular activity with numerous worldwide, and studies suggest that all forms of walking have health benefits
Oh, you are talking about walking? I like to walk everyday.
I like to walk too instead of running.  Especailly in hotter weather.
What else can you tell me about walking?
Walking is a great exercise and good for your health.
Yes that is true. Anything else?
Walking is from the Old English "to roll"
Oh really? To roll? I wonder why?
Old English is the earliest form of the language.
ok, but still not sure why roll has to do with walking.... maybe you just don't know.