San Jose park walk: 71°F, partly cloudy, UV 7 and light wind. Use shade where possible; do not chase pace. Target is controlled Z2 after yesterday's quick outdoor walk and 7+ hours sleep: smooth conversation pace, no hard hills/surges. Outdoor HR is spiky: brief 126–130 readings are acceptable if they settle quickly. If HR stays >125 for 2–3 min, slow to easy shaded walk or pause at a bench. If HR is unusually high from the start, or you feel dizzy, chest symptoms, unusual shortness of breath, headache, calf pain, feverish/body aches: stop and cool down. Drink small sips; avoid raising the watch arm repeatedly while checking HR.