An attack of angina, especially the first one, is a terrifying and life-changing experience. You’ve raced up the stairs or you’ve run to catch a train; suddenly an elephant is standing on your chest or a huge hand is squeezing your heart. Then you’re sweaty, lightheaded, and nauseated. You stop in your tracks; you wait; you pray you’re not having a heart attack. At last the elephant lifts his foot or the fist opens, the world slowly brightens, and slowly, carefully, you go home. (You really SHOULD go to an emergency room.)