How does slow music modify heartbeat?

* Hướng dẫn giải

Dẫn chứng: Research also shows that music also modifies heartbeat and blood pressure within a positive range. The heart beats faster as we listen to lively music and when the music slows, so do our heart and breath rate. In another study, old people suffering from high blood pressure reported significantly lower blood pressure as a result of listening to calm music after 30 minutes.

Đáp án đúng: B. It makes heartbeat slow.