He gets exhausted or starts coughing easily even from light exercise or activity. He walks without energy and struggles even when carrying heavy books or props. During sports days or outdoor activities, he might fall while demonstrating something or run out of energy before the students do. He cannot scold students harshly or discipline them strongly. He is easily startled by small commotions or incidents in the classroom, showing his flustered state before he can even think of how to handle the situation.