One preventive step Pivarnik suggests is checking your resting heart rate before getting out of bed every morning and making a chart so you can see a consistent, but gradual, decrease over time.

Pivarnik建议的一个预防措施是，每天早上起床之前测试你的心率，制作一张图表，这样你可以看到一个连续的但是随着时间变化心率逐渐变慢的过程。

youdao