A Quick 30-Second Test That Might Save Your Life Heart issues often appear without clear warning, but a short self-check can alert you early. In simple terms, it’s a quick way to see how your heart rate reacts to mild effort. The 30-Second Heart Check isn’t a medical test in https://share.evernote.com/note/4768a240-fc70-380c-4d35-0ea36c97e5b0