Within the domain of psychology, the term stimulation denotes the process through which the senses, the mind, or the body gets activated by the reception of internal or external information, thereby encountering a change in perception, feeling, or behavior. External stimulation could include sights, sounds, or social interactions. Internal stimulation includes thoughts or feelings. For example, children in rich and varied environments with the presence of engaging play, music, or conversation tend to improve in their cognitive and social skills more readily than children in impoverished environments. Alternatively, sensory deprivation which is a form of lack of stimulation can negatively affect mental health. Stimulation, particularly its intensity, is also significant. Too little stimulation can result in boredom, disengagement, and underperformance, while too much can lead to stress, anxiety, and sensory overload. Psychologists like Hebb reported that, in moderation, stimulation can aid in learning and alertness thereby determining the level of optimal stimulation necessary. In everyday life, varying degrees of stimulation can promote and enhance productivity, emotional health, creativity, or social relationships through physical exercises, tasks, or engaging in conversation.