Open the Apple Watch app on your iPhone.
Tap My Watch, go to Health > Health Details, then tap Edit.
Tap Height or Weight, then adjust.
Your Apple Watch uses the information you provide about your height, weight, sex, age, and wheelchair status to calculate how many calories you burn, how far you travel, and other data. The more you run with the Workout app on your Apple Watch.
Tap Workout, then turn on Auto-Pause.
Your Apple Watch automatically pauses and resumes your outdoor running and cycling workouts—for example, if you stop to cross the street or get a drink of water. You can manually pause your workouts by pressing the side button and Digital Crown at the same time.
For walking, running, swimming, and other workouts, your Apple Watch senses when you’re moving and alerts you to start the Workout app. It even gives you credit for the exercise you’ve already done. It will also remind you to end your workout, in case you get distracted when you’re cooling down. Follow these steps to turn workout reminders on or off.
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