patients – n. people who receive medical care or treatment

stretch – v. to move your muscles in a way that makes them long and tight

swing – v. to move with a smooth, curving motion

reflexes – n. actions or movements of the body that happen automatically as a reaction to something

hit bottom– v. expression reach the lowest possible level or point

degenerative - adj. medical causing the body or part of the body to become weaker or less able to function as time passes