Answer:
1. The constant notifications cause children to lose focus and pressure them to check constantly.
2. Social media might pressure a child to constantly look through others' posts. By seeing how successful or admirable specific posts are, they might stress due to envy, causing distress that prevents them from feeling relaxed enough to sleep.
3. They might feel the need to post regularly, and the planning for these posts and the posts themselves can take up space in a child's mind and life. They might think that being active on social media is more important than their health, and neglect their sleep.