I try this experiment once in a while during a bike ride. Joggers can be a bit harder than walkers because certainly the clothing doesn't always help (though few men jog in capri length tights as many women do.) Men sort of rock back and forth when they walk while women in general have a smoother stride and seem likely to swing their arms more. I watch them closely, of course, in my continuing effort to be like them.
People watching is great fun, of course. In the summer, it's fun to sit outside at a coffee shop or other setting and make up stories about the people going by. My favorite place to do this is Provincetown.
