What is a common physical reaction associated with CNS stimulant use?

The correct answer identifies bodily tremors as a common physical reaction associated with Central Nervous System (CNS) stimulant use. CNS stimulants, such as amphetamines and cocaine, increase the levels of neurotransmitters like dopamine and norepinephrine in the brain, leading to heightened alertness, energy, and often physical manifestations of that stimulation, including tremors. This shaking can occur in various parts of the body and is a clear sign of the heightened neural and muscular activity induced by these substances.

The other responses are not consistent with the effects typically seen from CNS stimulants. Increased fatigue and lethargy are usually associated with depressants, which slow down brain activity and can lead to feelings of tiredness or reduced energy. Decreased body temperature does not occur with stimulant use; rather, stimulants often lead to an increase in body temperature. Thus, recognizing bodily tremors as a specific reaction to CNS stimulant use is crucial for understanding the physiological impacts of these drugs.