The document summarizes key points about ergonomics and proper posture during virtual classes. It introduces ergonomics as the discipline concerned with designing workplaces and tasks to match human physiological, anatomical and psychological characteristics. It lists benefits of proper posture like improved posture, reduced physical discomfort, increased efficiency and productivity. It highlights important ergonomic domains and risks of improper posture at home during virtual classes. It concludes that maintaining correct seated posture during classes and work can prevent serious pains and issues.