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Called MyCalmBeat, the app USES a heart rate monitor that attaches to the ear to detect a person's optimal breathing rate, or resonant frequency, which is unique to each person.

这个应用名为“My CalmBeat”，它利用一个附在耳朵上的心率监测器来探测每个人独特的最佳呼吸频率，或者说是共振频率。