health benefits of walking and playing with dogs. this is sophia lloyd's other job, walking dogs, in neighborhood all over philadelphia. >> i walked over 500 miles at this point. it is like, almost here to pittsburgh and back. >> reporter: she's trekked these miles in the year and a half she has been working for barkley pets an on demand dog walking service. >> i have been typically been somebody who was at my office from 9:00 to 5:00 and in the move and then initially was a bit of an adjustment. >> reporter: sophia's regular job is a business coach where she's very sedentary. the dog walking provided a little extra money and added benefits of getting more exercise and being around dogs >> it is just feeling like really, suiting, dogs are just so, so loving, and amazing, all they want to do is make you happy. >> reporter: studies show people that walk dogs on a regular basis have a lower risk for high blood pressure, diabetes, obesity, also people who care for dogs live three years...