Go green

Both me and my husband have tried to walk like the girl in the photo. But will not succeed. How do you manage to walk with the back leg so straight? 
The building is from 1901 and was built as a market hall. And so it worked for a long time, but a fire in 1980 destroyed the hall inside. It was rebuilt. Since 1993 it contains a grocery store, pharmacy, restaurant and offices. The building has always had the green color. It fits well now that the grocery store there has the best range of organic and vegan foods in town.