Popular types of exercising are conducted in the gym or health club. When I refer to a gym, I am implying a health club. Two common types of exercising in the gym are working out / lifting weights, or using machines such as treadmills, bicycle machines, step machines, etc. It's common for guys to get together and talk about lifting weights. Likewise, girls get together and discuss the best methods to lose weight. In this lesson, we are going to lay the ground work on talking about exercising in the gym.
Professional weight lifters are called body builders. But since the number of body builders are not significant, we are going to concentrate more on regular weight lifting.
I don't lift weights, but when I see a friend who is noticeably bigger due to lifting weights, these are the types of things I say.