A Quick 30-Second Test That Might Save Your Life Cardiac Problems sometimes progress quietly, but this easy 30-second self-assessment can give you a lifesaving warning. In simple terms, it’s a quick way to see how your heart rate reacts to mild effort. This home screening doesn’t replace a doctor’s exam, https://www.behance.net/gallery/237765293/The-30-Second-Test-That-Could-Save-Your-Heart