Bob works closely with joe and is growing tired of joe's knowing-it-all attitude. bob has reached his

the answer is a a teenager needs more sleep than the adult no matter what

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.

b and d are your answers i just answered this question