Undereating in active individuals can lead to numerous potential consequences, including fatigue, decreased muscle mass, and impaired performance. Insufficient caloric intake can disrupt metabolism, leading to hormonal imbalances affecting physical and mental well-being. It can also increase injury risk due to weakened bones and muscles, as well as hinder recovery from workouts. Furthermore, chronic undereating may result in nutrient deficiencies, impacting overall health and performance. Balancing caloric intake with energy expenditure is crucial for active individuals to maintain health and fitness.