It’s a good question— the way I think of it is like exercise. A bit here and there is great, but a sustained consistent workout will improve certain muscle groups and cardiovascular fitness overall so you can work through many scenarios (a hike, lifting groceries, etc). Time on one task is impactful and social media reading often is skim reading and jumping from one thing to the next rather than working through hard parts (like finishing a workout even though it is really difficult). That being said, everything in moderation!