Juvenile delinquency refers to
A.
destructive behaviors that are committed by people under age 18.
B.
normal physical maturation that occurs during adolescence.
C.
sense of autonomy that usually develops during puberty.
D.
confusion that teens may experience as they search for identity.

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.