Why do proponents of the 1000km of zone 1 per week mantra assume that every cyclist, regardless of their goals, fitness level, or available training time, can or should be doing this volume of low-intensity riding, when in reality, many riders are already maxed out on time and energy just trying to fit in a few hours of riding per week?
Whats the actual science behind this arbitrary 1000km figure, and how does it account for individual variability in recovery, adaptation, and overall training response?
Is the idea that every cyclist should be doing 1000km of zone 1 per week simply a reflection of the endurance-focused, more is better culture that pervades the cycling community, or is there actually some concrete evidence to support the notion that this is the optimal way to train for every type of rider and every type of goal?