Healthy people need to exercise three or more times a week to maintain good health. Walking, riding a bicycle, and swimming are good ways to exercise. Joining a health club can be expensive, but some people enjoy using expensive sports equipment and working out with other people. (3-page lesson)
Some people workout at a gym.
A gym is also called a health club.
Members pay to join a gym.
This is a treadmill.
People walk on a treadmill.