A person walking can simultaneously swing their arms or keep them in their pockets, speak or whistle, or express emotions through facial expressions.[24] The important thing about secondary actions is that they emphasize, rather than take attention away from the main action. If the latter is the case, those actions are better left out.[25] For example, during a dramatic movement, facial expressions will often go unnoticed. In these cases it is better to include them at the beginning and the end of the movement, rather than during.[26]