Lock the screen on your Apple Watch to prevent false touches during workouts.

You can lock your Apple Watch screen, so nothing can accidentally tap the screen, change your metrics, or end your workout. Just firmly press the display and tap Lock.

When you want to end your workout or make changes, firmly press the display again and tap Unlock.

From this support article > Use the Workout app on your Apple Watch

This user tip was generated from the following discussion: Lock the screen on your Apple Watch to prevent false touches during workouts.