Regardless of your current physical strength and neuromuscular control levels, the 80/20 Endurance Premium Strength Plans will help you improve by focusing on the fundamentals of building a strong base and progressing according to evidence-based principles in a manner that complements your endurance training. This strength training plan is designed to supplement your 80/20 IRONMAN® 70.3 Level 3 plan, but it can be added to any 21-week endurance plan. Apply it concurrently with your existing ...