In the Nia Technique, we use sounding and the actual words of YES and NO, to conjure up emotion, power, and will in our workouts. It's fascinating to notice how a "no" with just voice and a "no" with whole body are two different beasts.
Start with the legs in an A stance, arms crossed, and say your first no. Notice and play with different facial muscles. Now try the word no with your arms in front of your body, hands in a stop energy. Now try no with your arms slicing down by your sides. Continue to explore shapes and movements as you experiment with different nos: gentle, whisper, fake smile, rage, weak, strong. Work to find your body stance of incredible power as you NO your way into new boundaries.
What needs to stop in my life? By saying NO, what Yes am I bringing in?