[Solved] ______________________________ is caused by an accumulation of lactic acid in the muscles. Adolescents: Young people in the transitional stage from childhood to adulthood, typically characterized by significant physical, psychological, and emotional changes. Service Learning Program: An educational approach that integrates service in the community with instruction and reflection to enrich the learning experience. Lower Rates: Reduced numerical values or percentages in various contexts, such as interest, inflation, or crime rates. Erotic Plasticity: The degree to which an individual's sex drive can be shaped and altered by social, cultural, and situational factors.