Phase 2 of our Beginner Cyclist Training Plan builds on the gains you made in Phase 1, allowing you to quickly improve your fitness and speed. In Phase 1 of the Beginner Cyclist Training Plan you built up the ability to cycle for one hour continuously at an easy pace. In Phase 2 you will start to include high intensity interval training (HIIT) in your workouts. This will cause increased calorie burn, fight stress, and help you to get fit faster. Recent research also shows that high intensity interval training is the most effective exercise to fight aging.