What is zone 2 cardio, and how do I actually do it?

Zone 2 training is cardio done at a steady, low intensity. It has benefits for aerobic training (so you can run faster), anaerobic training (helping you to recover faster between reps and sets, or ...

Why zone 3 cardio is just as good as zone 2

Zone 2 is good for long sustained efforts. It's usually OK to do zone 2 in place of a rest day. Zone 3 helps you adapt to harder work than zone 3. It burns more fat but incurs a little bit more ...