This is another nice drill. Stand close to each other either facing or otherwise and start to hit the no no spots gently. For a man this means the center of the behind, the penis and in some cases the face depending on the culture you grew up in. For ladies it’s usually the behind in open hand hits, the breasts and between the legs. The reason I am listing examples is just to show different people have different ideas of what you can and cannot do. I won’t come to a student on the first lesson and lift him by the balls (had it done to me, not nice) you have to be sensitive to this and try to hit with breath pauses and check if you can see the pulse or feel it on the surface. This is subtle but important. A hit in the right timing is better than hitting hard without sensitivity.