1. How long have you been exercising? . . . . . I often see that you have great perseverance!
2. What is the effect of your exercise? . . . . Look at your energy! It may be a compliment, but everyone likes to hear it.
3. How many times a week do you come? . . . . . .
Wait, the key is talking. The above questions should be randomly enriched in the chat. Don't get stuck in the first few words. That would be awkward. Of course, even if it is difficult to speak at first, you can give people a smile, nod and say hello first, and then speak when you are familiar with it.