The number of newly contracted HIV cases among Minnesota residents during the year of 2013 is a measure of a. incidence
b. attack rate
c. prevalence
d. disease ratio

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.