What Is Cardio?
What the heck IS “CARDIO” anyway? Turns out it means only one thing but there’s lots of ways to do it. Fitness Experts say “Don’t Do It” but what are they really saying?
What the heck IS “CARDIO” anyway? Turns out it means only one thing but there’s lots of ways to do it. Fitness Experts say “Don’t Do It” but what are they really saying?