Mood enhancers, such as certain antidepressants, improve mental health by adjusting the balance of neurotransmitters in the brain, contributing to a more stable emotional state. In contrast, stimulants primarily increase energy and alertness by boosting levels of dopamine and norepinephrine in the brain. While both can influence mood, mood enhancers target underlying emotional issues for long-term improvement, whereas stimulants may provide short-term effects. Understanding the differences is crucial for selecting appropriate interventions, particularly in the context of fitness and overall well-being.