WHY WE LIKE this article
This article basically just tells you all the good stuff we've been trying to tell you about working out in your Target Heart Rate zone -- but does it in a much clearer way. It uses a different model - more generalized -- of calculating Target Heart Rate Zones than we do in the challenge, but you'll get the gist. And you can calculate a more individualized target heart rate by using our handy dandy Target Heart Rate Zone Calculator.
AN EXCERPT THE ARTICLE:
"When you work out, are you doing too much or not enough? There’s a simple way to know: Your target heart rate helps you hit the bullseye so you can get max benefit from every step, swing and squat. Even if you’re not a gym rat or elite athlete, knowing your heart rate (or pulse) can help you track your health and fitness level."