Running, jogging, dancing, cycling, swimming, treadmill, and elliptical machine - these are all great examples of cardio activities to implement into your routine. I always also suggest that so many forms of cardio involve the leg muscles, you can also do boxing exercises which involve your upper body muscles and still use your cardiovascular system. (By the way, our bodies are similar to hybrid cars. We have two main ways our body makes energy to function and exercise - the anaerobic system, which we use during our resistance and weight bearing exercises, and the aerobic system, which we use during [...]