How do broken bones heal?

i think it is when the blood clots to offer protection and deliver the cell needs for healing ,then the area of healing tissue forms around the broken bone.this is called callus

so what is your question?

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.