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This video explains that during adolescence, the biological clock shifts, causing young people to fall asleep and wake up later than adults. This makes it difficult to get adequate rest when they have to wake up early for school, affecting their performance, mood, and health. Participants Martina (adolescent), Núria Ramos (Cooperativa Ranura), and Esther Luna (project coordinator, UB) explain that adolescents often do not get the recommended 9-10 hours of sleep, which leads to stress and disorganization. The goal is to understand how the sleep pattern works to help them, recommending physical activity, exposure to natural light, and healthy sleep routines.