10. Alcoholic cardiomyopathy is especially dangerous because (A. blood can leak from the heart into the chest cavity
B. It can be passed to infants through the parents genes
C. sufferers sometimes show no symptoms until a fatal heart attack
D. All of the above

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.