Sleep aid and light health preservation
Used for emotional health preservation.
When it's time for us to go to bed at night, we tell ourselves it's bedtime and we want to sleep. Then, we tell ourselves to relax, relax, relax, relax, relax, relax, relax, relax, relax, relax, relax, relax, relax, relax!
source: https://www.thinkflow.com.cn/
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