What are some creative ways to structure and schedule dumb trainer sessions within a training block to maximize their effectiveness, while also avoiding the dreaded trainer fatigue and mental burnout that can come with staring at a wall for hours on end? How can we use dumb trainers to target specific physiological adaptations, such as building anaerobic capacity or improving muscular endurance, and what are some innovative workouts or drills that can be done on a dumb trainer to keep things fresh and engaging? Are there any unconventional ways to incorporate strength training, plyometrics, or other forms of cross-training into a dumb trainer session to enhance overall cycling fitness? What role can dumb trainers play in a periodized training plan, and how can we use them to augment or replace outdoor rides during periods of high volume or intensity?