Turns out, that connection may have a physiological foundation. A small study suggests people who sing together have synchronized heartbeats.
Singers often inhale and exhale at similar times. When your heartbeat is connected to your breathing pattern, it’s called respiratory sinus arrhythmia, or RSA. RSA can have a soothing effect on the cardiovascular system. For instance, past studies have shown guided breathing – like what’s done in yoga – can be beneficial for high blood pressure problems.
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