Why Does Screen Time Make Us Tired?

When you stare at a bright phone or tablet for too long, your brain gets tired. It is not just because your eyes hurt. The light from the screen tricks your body into thinking it is still daytime.

Your body makes a special helper chemical called melatonin to tell you when to sleep. Bright lights, especially blue ones like those in screens, stop melatonin from working well. So even if you are sleepy, your brain says 'No way! We have work to do.'

To feel better, try turning down the brightness or using night mode on your devices. This lets your body prepare for rest sooner. It is like giving your eyes and brain a little break from the bright party.