The simplest way to record a workout
Open the Workout app on your Apple Watch — it's the green icon with a white figure. Scroll down and tap the activity you did: Walking, Running, Cycling, Swimming, Elliptical, Rowing Machine, or one of about 80 others. Tap the play button to start recording, and the watch will track your heart rate, calories, and distance (if you have GPS). When you're done, swipe up and tap End.
That's the standard path. But Apple Watch also records workouts in the background without you opening the app — if you go for a run and forget to start the Workout app, watchOS may detect it and ask if you want to save it. You can also add a workout manually after the fact if the watch didn't catch it, or if you did an activity away from your phone.
The watch sends all workout data to the Health app on your iPhone, where it stays unless you delete it. That same data is what third-party fitness apps see when you give them permission — which is why controlling what you record matters.
Key Takeaways
- The Workout app on your watch records heart rate, calories, and distance in real time; you start it before exercise and end it when you're done.
- Apple Watch can detect some workouts automatically and ask you to save them, but you can turn this feature off in settings if you don't want background tracking.
- Workouts sync to your iPhone's Health app, and any fitness app you connect will see this data if you grant permission.
- You can add a workout manually by date and time if you exercised without recording it, or if you want to log an activity the watch didn't detect.
- Deleting a workout from your watch removes it from Health on your iPhone, but third-party apps may keep their own copy depending on their settings.
Starting a workout before you exercise
Open the Workout app and scroll through the list of activity types. Tap the one that matches what you're about to do. The watch will show you a screen with the play button in the center — tap it to begin. You'll see a three-second countdown, then recording starts.
During the workout, the watch displays your elapsed time, heart rate, and calories burned. Swipe left or right to see different screens with distance, pace, or other metrics depending on the activity type. If you need to pause — say, you stop at a traffic light — swipe up and tap the pause icon. When you resume, tap the play button again.
When you finish, swipe up and tap End. The watch will show you a summary: total time, calories, distance, and average heart rate. Tap Save to record it, or Discard if you want to throw it away. Once saved, it goes to your Health app on your iPhone within a few minutes.
Letting Apple Watch detect workouts automatically
If you start exercising without opening the Workout app, your watch may notice the activity and ask you about it. After a few minutes of sustained movement that looks like exercise, you'll see a notification: "Workout Detected — Running" or "Workout Detected — Walking." Tap it and choose Save or Discard.
This automatic detection works best for running, walking, and cycling — activities with steady, repetitive motion. It's less reliable for strength training or sports with irregular movement. If you don't want the watch to detect workouts at all, you can turn this off: on your iPhone, open the Watch app, go to Privacy, and toggle off Fitness Tracking. This stops the watch from monitoring your movement in the background.
Turning off automatic detection also means the watch won't record workouts you forget to start manually. If privacy is your concern, this is the trade-off: you get less tracking, but you also have to remember to open the Workout app yourself.
Adding a workout after the fact
If you exercised but didn't record it — or the watch didn't detect it — you can add it manually. On your iPhone, open the Health app and tap the Browse tab at the bottom. Scroll down and tap Workouts. In the top right, tap the plus sign.
Choose the activity type, then enter the date, start time, and duration. You can also add distance and calories if you know them, but these are optional. Tap Add, and the workout appears in your Health history. It will sync back to your watch and show up in the Workout app's history.
Manual workouts don't include heart rate data because the watch wasn't recording your pulse. Third-party fitness apps will see the workout in your Health data, but they'll know it was entered manually and may handle it differently than a recorded one.
Understanding what data gets shared with fitness apps
Every workout you record — whether automatically detected, manually started, or added after the fact — goes into your Health app. When you connect a third-party fitness app like Strava, MyFitnessPal, or Nike Training Club, you choose which data types to share with it. You can allow it to see Workouts, Steps, Heart Rate, or other metrics.
Once you grant permission, that app can read all your past workouts and any new ones you record going forward. If you later revoke permission in Settings, the app loses access to new data, but it usually keeps the data it already downloaded. Some apps let you delete your data from their servers separately — check their privacy settings.
If you delete a workout from your Health app on your iPhone, it disappears from your watch too. But if a third-party app already synced that workout to its own servers, deleting it from Health won't remove it from that app's records. You'd need to delete it there separately.
Turning off automatic workout detection
If you don't want your watch monitoring your movement in the background, you can disable automatic detection. On your iPhone, open the Watch app, tap Privacy, and toggle off Fitness Tracking. This stops the watch from detecting workouts you don't manually start.
You can also be more selective: in the Workout app on your watch itself, you can choose which activity types appear in your list. Swipe to the bottom of the activity list and tap Edit, then remove any activities you don't want to see. This doesn't stop the watch from detecting them — it just hides them from your quick-access menu.
If you turn off Fitness Tracking entirely, you'll need to open the Workout app and manually start every workout. The watch will still record your heart rate and other health metrics for the Health app, but it won't track exercise unless you tell it to.
Checking your workout history
On your watch, open the Workout app and scroll down to see past workouts listed by date. Tap any workout to see details: duration, calories, distance, average heart rate, and splits (pace per mile or kilometer). You can also see this same history on your iPhone in the Health app — tap Browse, then Workouts, to see everything recorded.
The Health app on your iPhone shows more detail than the watch. You can see trends over time, compare workouts by type, and export your data. If you connect a third-party app, it will pull this same history and may display it in its own format or combine it with data from other sources.
Frequently Asked Questions
Does Apple Watch record a workout if I don't open the Workout app?
Only if automatic detection is on. Your watch will notice sustained exercise after a few minutes and ask if you want to save it. If you don't respond or if automatic detection is off, the workout won't be recorded unless you start the app manually or add it later.
Can I delete a workout from my watch?
Yes. On your watch, open the Workout app, find the workout, swipe left, and tap Delete. On your iPhone, open Health, tap Workouts, find the workout, tap it, scroll down, and tap Delete Workout. Deleting it from either device removes it from both.
What happens to my workouts if I disconnect a fitness app?
The app loses access to new workouts, but it usually keeps the data it already downloaded. To remove your data from that app's servers, you may need to delete your account or request deletion in the app's privacy settings. Check the app's help section for how to do this.
Can I record a workout without GPS?
Yes. The watch uses your arm motion to estimate distance and calories even without GPS. GPS gives more accurate distance for running and cycling, but you don't need it to record a workout. Indoor activities like swimming or rowing don't use GPS at all.
Why does my watch sometimes ask me to save a workout I didn't do?
Automatic detection can mistake other activities — like vigorous cleaning or fidgeting — for exercise. If this happens often, you can turn off automatic detection in the Watch app's Privacy settings, or straightforward tap Discard when the notification appears.