Take a repetitive action you do such as sharpening a blade on a stone or simply bouncing a ball against the wall and repeat the action 100 times. The drill is not the movement but avoiding getting lost in the movement. Let your breath lead the movement and make each of the movements an action you create rather than follow. It will be tempting to create a rhythm and follow it but habits are masters in the guise of friends and your freedom will not be found in a one time rhythm but in creating each moment free from the drift of others.