Based on the available data, users will be offered the option to customize social media notifications. And if they spend 10, 20 or 30 minutes in it (depending on personal settings), then they will receive a reminder to rest.
Note that in recent months, Meta (ex-Facebook) has repeatedly announced its desire to help its users to restore mental health. And the emergence of a new function may be the next step towards the implementation of these plans.
Recall that a little earlier, Google announced that it was hiding the number of dislikes under YouTube videos. Thus, the company wants to reduce their number.