1. Self-analogy principle: When the human brain perceives environmental sounds, it will make self-analogy according to past experience and memory. Drinking water is a quiet, steady and relaxing sound for most people, so hearing this sound will trigger the brain to have a feeling and state similar to drinking water, which will help relax and promote sleep.
2. The principle of deep attention: Hearing has a great influence on people's psychological state and emotions. When we focus on a certain sound, our brain will be freed from other distractions and enter a state of relaxation and concentration. As a monotonous voice, drinking water can attract our attention, help us concentrate and gradually enter a deeper state of relaxation, thus helping us fall asleep.
It should be noted that everyone has different reactions and preferences to sound. For some people, drinking water may really help them fall asleep, but it doesn't apply to everyone. If you find yourself insensitive to the sound of drinking water or not responding well, you can try other ways to help you sleep, such as natural sounds and meditation music.