It allowed me to import past workouts into Apple’s Activity app from Runkeeper while allowing me to keep both places in sync going forward. It can be download on the App Store.

Open the Activity app on Apple Watch. Swipe left to the "Move, Exercise, and Stand" screen and tap Get Started. Enter your personal information (gender, age, weight, and height).

Adding workouts in this manner allows you to track what may have otherwise gone untracked, and will update your Health app Activity rings accordingly.

When you open the Apple Watch Workout app, the main screen by default offers you 10 quick-start workout types that you can use to track your exercise. These include Walking, Running, Cycling ...

Get fit and stay healthy with the Apple Watch's Activity app, which tracks your daily exercise and calorie-burn goals. Here's how to use all the features of the Activity app on the Apple Watch ...

We look at the Apple Watch’s Activity app elsewhere, which tracks time spent moving, exercising, sitting and standing and helps you to aim for daily and longer-term goals. But for a specific ...

If you have lost any previous data on your Apple Watch, you can manually log-in your workouts on your watch to replace the ones that are no longer there.

5. Once you’ve entered the information hit Add and it will be added to your workout history and calendar inside the Health app. Do manually logged workouts count towards Activity rings?

You can manually add a workout to your Apple Watch using the Health app on your iPhone. This will be reflected in your activity rings.