How do I change the always on screen setting?

[SunsetRunner]

I changed my screen to always be lit when doing a workout.  I want to change it back again, but cannot remember how to do.  Can anybody help?

Moderator edit: Updated subject for clarity 

[SilviaFitbit]

It's great to see you around @SunsetRunner. I'll be happy to answer your question about how to change back to the always on screen setting. 

1. On Ionic, tap the Exercise app .
2. Swipe through the list of exercises until you find the one you want to
customize.
3. Tap the gear icon and swipe through the list of settings.
4. Tap always-on screen setting > change it to off 
5. When you're done, press the back button to return to the exercise screen, and
tap the play icon to start the workout.

Let me know how it goes.