Forecast-derived garage estimate 82–84°F: sunny Fremont ~69°F outside plus strong solar gain. If actual room is <78°F, you may add +1% incline after min 20 only if HR stays <112. Today is controlled Z2+, not a true moderate push: yesterday was 99–125 bpm for 45 min and sleep is 6+h. If HR sits >122 for 2–3 readings, drop steady to 2.5/1%. If HR >128, abort to 1.8 mph flat. STOP if headache, dizzy, vision changes, unusual shortness of breath, chest/calf pain. Drink water in small sips (PPG sensor reads bottle-raise as spike). Sit 2 min before standing.