What actually happens with your body if you increase cardio?

Question

For example you could be super in shape from a muscular perspective but have really bad cardio and vice versa.

How is cardio different from physical shape and what exactly happens in your body that makes you have more cardio?

In: 368

Answer 1

Long, relatively low exertion cardio exercise 1) enhances fat metabolism, 2) creates new capillaries in the working muscles, 3) increases capacity to recover from exercises, 4) increases muscle stamina, 5) lowers both resting heart rate and blood pressure, 6) burns fat most intensively from the places where it’s most harmful: first and foremost from the liver, and secondly around other internal organs.