Controlled moderate because yesterday was only a quick outdoor walk and sleep was 7+ hours. Forecast-derived garage estimate 76–80°F from Fremont sunny late morning; actual thermometer overrides. Sunny drift can add ~2°F during the session. If actual garage ≥80°F or HR is already >115 by minute 8: convert to Z2 at 2.5–2.6 mph / 1–2% for 35–45 min. If actual garage ≤74°F and HR stays <115 after minute 18, optional +0.1 mph or +1% incline. CAP: ignore brief drinking-water spikes. Keep sustained walking HR ≤125; hard stop 128. If HR >125 for 2–3 min while not drinking, drop to 2.2 mph flat. Stop for dizziness, chest symptoms, unusual shortness of breath, headache, calf pain, feverish/body aches, or if HR feels disconnected from effort. Drink water in small sips; sit 2 min before standing.