Why do we often sleep well on rainy days? That's because the sound of rain will overwhelm the surrounding noise, making people feel comfortable and "quiet" unconsciously. Contrary to imagination, when we hear the sound of rain, we will enter a quiet world, our hearts will settle like autumn water, and our emotions will be more stable than ever. Thanks to that, sleep quality is also improved. What if it rains lightly? The steady sound of the rain sounds like a lullaby, making it easier for us to fall asleep. Research has found that when you hear the sound of rain, your brain will unconsciously relax, producing alpha waves. This state is close to the state of the brain when people are sleeping.
