You might want to try this: for five minutes before you start your technique, do gibberish. Make all kinds of sounds, as long as they are not a real language. Pretend you are talking in a language no one knows. Make loud sounds, soft sounds, angry sounds, sad sounds, just create any non-word sounds you like. Really get into it! And move your body around too.Then do your regular practice.If this doesn't work, try a little green tea.