The Patch: What Are Training Zones? November 14, 2020 01:34 Updated Follow Not signed in? Log into your Purple Patch account for full access to your education program for coaches and athletes. You need to sign in to view this page. Part 1 Part 2 Part 3 Related articles How to Add Training Volume Purple Patch Glossary The Patch: Matt Dixon on Training Zone Basics Join a Live, Coached Bike Class with Matt Dixon! What is Bounding?