3: Building in Layers

It’s taken me over three years to build layers of resilience and fitness into my body. My aerobic “engine” is well developed, and I can run at a relatively fast pace (6.4 min/mile) at a very comfortable aerobic-level heart rate (<140bpm).

That comes from layers and layers of consistent training built upon each other. It certainly was not the result of two or three big workouts, sparsely distributed.