When people mentally or physically engage in an action, a brain cell related to the action reacts. Once a brain cell responds to a certain type of stimulus, even situations related to it or scenes that are similar can cause the same reaction even though the individuals themselves don't actually do it or see the same scene. So then, what can be the problem with this happening? Let's say for instance, a person has acted violently toward people in the past, he may feel the same just seeing violence in movies. The same applies to sensual soap operas or films. Therefore, we should be wary of what we see via the Internet and TV.