The Patch: What Are Training Zones? November 14, 2020 01:34 Updated Follow Not a Member yet? $25/month Get Purple Patch Education Membership, A complete performance education program for coaches and athletes. SUBSCRIBE You need to sign in to view this page. Part 1 Part 2 Part 3 Related articles Purple Patch Glossary What is Bounding? A Purple Patch Success Guide for Annual Planning How to Return to Running Post Injury What is the Sunday Special?