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Show HN: Fastsleep.app - An App for Nighttime Overthinkers
失眠者福音！用想象场景代替音乐，闭眼跟随提示进行脑内画面练习，帮你从过度思考中抽离，快速放松入眠。
Instead of music or long podcasts you are given something to imagine at a time interval. Like if you hear "calm river", imagine that. If you hear "hea…