Running is simple yet one of the most effective workout routines. If done correctly and consistently, it can help you burn tons of calories and also strengthen your heart muscles. Many find running a simple monotonous activity, but this form of cardio exercise has many layers. It is much more than just putting one leg in front of the other or hitting the pavement. Just like any other form of workout, running too is of different kinds. To add a little excitement to your workout routine and torch more calories, here are some running routines that you may give a try.