Nobody Can Agree on What ‘Zone 2’ Cardio Is
via lifehacker.com
Short excerpt below. Read at the original source.
We may earn a commission from links on this page. “Zone 2” is the term the fitness world has (mostly) agreed upon to describe the low-intensity cardio most of us should be doing regularly. When you’re in zone 2, you’re working hard enough that you start breathing more heavily, but easy enough that you could […]