虽然很多小朋友的健身卡都是被忽悠了才办的，但是去健身房蹦跶几下，肯定要比当一只couch potato强。生命在于运动，即使是去打酱油，也比在网吧里浪费青春来的值。所以雅思口语里面something you do to stay healthy这个话题我们把素材定成去健身，绝对是完全符合要求的。并且根据以往的经历，我们还可以把该素材用在recent change或者achievement you are proud of等话题里面。
　　让你的gym membership card在雅思考场发光发热，它也算没白办了。
　　Well, the thing I do to keep fit is working out in the gym on a regular basis.
　　Before I joined the gym, I used to be weak and heavy, you may not believe this, but I used to weigh 170 pounds. After training for a semester, I'd successfully lost 30 pounds and my health condition has improved a lot.
　　Here's what I do in the gym:
　　Every time I go there, I would do a 20 minutes' warm-up by jogging on the treadmill. And then my personal trainer would give me some guidance to build my muscles, to train my strength, you know. My trainer asks me to lift weights as part of my training. Each time, I'll have to repeat this for 30 times, each arm. (此处应有body language) Although my muscles are not that obvious, you see, (此处同样应该有body language，给考官看不那么obvious的肌肉……) I do feel that I'm much more powerful than before.
　　I've been doing this for almost a year, and I have to say, it's definitely a perfect way to stay in shape.
　　I'm now more focused during class, and my efficiency is much higher when I'm working on my assignment, maybe that's because I don't feel tired that easily, like I used to be. Oh, and my grades in PE class has improved as well.
　　So you see, if someone wants to stay healthy, I would strongly advise him or her to get a gym membership card, it would be totally worth it.

　　语言点解析：
　　basis = the way things are organized or arranged 例如：
　　on a regular/ permanent/ part-time/ temporary basis
　　on a daily/ day-to-day/ weekly basis
　　train = to prepare yourself / somebody for a particular activity, especially a sport, by doing a lot of exercise; to prepare a person or an animal in this way 例如：
　　athletes training for the Olympics
　　I train in the gym for two hours a day.
　　treadmill = an exercise machine that has a moving surface that you can walk or run on while remaining in the same place 例如：
　　I try to do half an hour's exercise on the treadmill every morning.
　　personal trainer = a person who is paid by somebody to help them exercise, especially by deciding what types of exercise are best for them