On mobile devices, the bedtime reminder lets you set specific times when you want to get a reminder to stop watching videos and go to bed. You can have the reminder interrupt your video or wait until the video ends.
You can set a sleep timer if you want the video you’re watching to automatically pause after a certain time.
Note: For users aged 13-17 on YouTube, the bedtime reminder is set to On by default. For users 18 or over, the default setting is Off. All users can change this setting at any time.
Set a bedtime reminder:
- Tap your profile picture
.
- Tap Settings.
- Tap General.
- Next to Remind me when it’s bedtime, tap the switch to On
or Off
.
- If switching to On, select a start and end time for the reminder and tap OK.
Tip: You can also set bedtime reminders by tapping your profile picture 
Time Watched.
Time Watched.If you want to finish your video before seeing the bedtime reminder, select Wait until I finish video to show reminder when setting up.
When your bedtime reminder goes off, you can dismiss it by tapping 