Is Your Body Language a Good Idea?

I have students who learn English and then they speak it. They don't feel ridiculous, but the more you study grammar, the more you will tend to achieve perfection. The last thing I want them to worry about is do you speak like Queen of England? Do you have a perfect accent? So that's not the most important thing. But people, yeah, they get obsessed with this and they're using all time and energy on this. And I don't think it's a good idea. Even when I'm traveling around, sometimes if their English is very low, then I don't use proper English because I know they can't understand it. It works. I can travel almost anywhere