Welcome to your 12-week Base Period for Cyclist Plan The base period focuses on the continued development of endurance and introduces both muscular and anaerobic endurance to your training. This is the time when you begin combining basic cycling abilities - endurance, force, and speed - to form advanced racing abilities (Muscular Endurance, Aerobic Endurance and Power). This low-volume version is for busy athletes who want to train 4 to 5 times per week. This plan includes optional mobility ...