Ever crawl into bed exhausted, only to find your mind still racing after scrolling or binge-watching? According to Dr. Keshav Narain of South Bay Retina, it’s not just blue light—digital content itself overstimulates the brain, keeping stress hormones and reward pathways active when you should be winding down. This disrupts sleep quality, fuels eye strain, and leaves you overtired. Simple habits like digital curfews and bedtime rituals can help your brain reset for rest.