This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. Zone 2 training is a type of cardio exercise where you use your heart rate as a guide to help you find the right intensity for ...
When most people hear the word ‘cardio,’ they instantly think about endless hours on the treadmill. The sad part is that many of these folks cannot see an improvement in their physique, even after ...