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Girl boring a boy in a elementary school class
© Gabe Palmer/DoctorStock.com
11 to 15 years old, 4, adolescence, anxiety, child, Childhood, chronic fatigue, concentration, concept, concepts, conceptual, depression, distress, down, downcast, emotion, emotional, emotions, exhaustion, fatigue, frustrated, mental, mental health, mood disorders, moods, overworked, Psychology, public health issue, quality of life, sad, unhappiness, unhappy, unhealthy living