dr. xu's university hospital collaborates with rural hospitals in china. dr. xu and his colleagues supervise surgeries conducted by their chinese
counterparts through online video. what kind of healthcare are dr. xu and his team practicing?

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.