Today's 'Words to the Wise' may leave us a little tired, because our topic is exercise.I'm Ashley Thompson. And here with me in studio is Learning English reporter John Russell.Hi Ashley. You're right. We're going to get a workout today thanks to Learning English fan Raphael Duarte.He posted a suggestion for us on our website.He wrote: I would like you guys to talk about working out at the gym, terms, routines or stuff related to it."John, I have heard that you work out a lot. Do you belong to a gym?First, let's explain that word -- gym.Gym is the short form of the word gymnasium, a room or building with space and equipment for indoor sports activities.Most American schools have gymnasiums where students can exercise.Right, and there are also private gyms. People pay money to belong to them.Private gyms might include trainers who can help you learn how to best use the gym's equipment,like weights, treadmills and rowing machines. So, do you belong to one of those gyms?I belong to a rock climbing gym. It has wide, tall walls.