Weekly long Z2 indoor ride—the quiet session that moves the needle toward sub‑8:30. Today was low Zone 2, steady and controlled. Why? Low lactate = high aerobic stimulus: more mitochondria, capillary density, and fat oxidation. Indoors keeps power smooth, posture clean, and surges out. How it fits the season plan: This ride anchors aerobic volume each week. Goals: raise LT1, improve durability, and hold aero longer with less cost Outcome: higher sustainable bike power and better glycogen sparing