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 your ...
Zone 2 training has recently become a staple in my routine, and I can see why the experts are such keen advocates. Before now, I would force myself to go hard whenever I did a cardio or HIIT workout, ...
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