A Quick 30-Second Test That Might Save Your Life Cardiac Problems sometimes progress quietly, but a short self-check can alert you early. In simple terms, it lets you observe whether your heart rate and recovery look normal after activity. The 30-Second Heart Check isn’t a medical test in itself, though https://www.tumblr.com/dramitpatil/799125220035313664/the-30-second-test-that-could-save-your-heart?source=share