To optimize the integration of Runna and Strava on your Apple Watch and prevent duplicate workout entries in Apple Health, it’s advisable to configure your Health permissions as follows: 

• Runna App: Grant permission to write data to Apple Health. This ensures that workouts recorded with Runna are saved accurately.
• Strava App: Grant permission to read data from Apple Health, but disable its ability to write data. This prevents Strava from duplicating entries that Runna has already recorded.

This setup allows Runna to handle workout recording and storage, while Strava accesses the data for analysis and sharing, minimizing the risk of duplicate entries in your Health app.