The Patch: What Are Training Zones? (Part 2) August 24, 2020 14:11 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. Related articles The Patch: What are Training Zones? (Part 3) The Patch: What Are Training Zones? (Part 1) How do I determine my training zones and thresholds?