A lot has been said on the benefits of walking. While some experts say that walking is more of an activity rather than an exercise, others believe that walking in fact, can help you build muscles as well, provided you do it the right way. Walking is usually considered to be a cardiovascular exercise, (only brisk walking) which means it helps your heart and lungs stay healthy. However, walking also uses many muscles in your legs, hips, and even your core. When you walk regularly, these muscles get stronger and more toned over time.