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). The plan includes: - Structured Cycling sessions with Power and Heart rate targets - Optional strength sessions to help avoid ...