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Chemicals that can inhibit or block sensations of pain are:
Motivation
The process that initiates, guides, and maintains goal-oriented behaviors.
Behavior
The actions or reactions of an organism, often in relation to its environment, which can be observable and measurable.
Arousal Theory
A theory in psychology that suggests people are motivated to maintain an optimal level of arousal, not too high or too low, for their personal best performance.
Excitement
A feeling of great enthusiasm and eagerness, often accompanied by physiological signs such as increased heart rate and heightened senses.
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