80/20 Triathlon: Discover The Breakthrough Elit... Online

80/20 Triathlon by Matt Fitzgerald and David Warden advocates a training methodology where 80% of volume is low-intensity and 20% is moderate-to-high intensity, utilizing a 7-zone system to improve endurance while reducing fatigue and injury risk. The book provides comprehensive training plans for various triathlon distances and skill levels, with focus on accurate, test-driven intensity zones. For more details, visit Amazon .