The Deal

• $39 for a three-week adult-beginner tennis program: valid for January session ($300 value)

January session runs January 2, 2017–January 22, 2017. Players can choose from the following meeting times: Tuesdays and Thursdays from 6–7 p.m. or 7:30–8:30 p.m. or Saturdays and Sundays from 9–10 a.m. or 10–11 a.m.

Tennis Elbow: The Menace on the Court

Swinging a tennis racket hundreds of times a week can put stress on your arm, sometimes resulting in elbow pain. Find out how to tame the pain with Groupon’s study of tennis elbow.

A medical publication from 1883 references a condition called “lawn tennis arm,” which it recommended treating with a compression wrap and the age-old remedy of rest. The term has since changed—physicians identify it as a form of tendonitis known as lateral epicondylitis, or tennis elbow—but the treatment hasn’t wavered far from that original regimen.

Tennis elbow occurs due to microtearing and degeneration of the muscles and tendons located on the outside of the elbow, typically on the top of the forearm just below the joint. These are the same tendons that flex when you extend your fingers or cock your wrist back. The condition tends to emerge in people who put too much stress on this area by gripping, twisting, and swinging different instruments, especially uncooperative clarinets. At some point or another, nearly half of all tennis players suffer from an onset of the condition, though they only make up about 5% of all sufferers. More often, tennis elbow develops in people who spend a lot of time swinging a hammer or twisting a screwdriver.