Doctors are healthcare professionals who encourage health, treat illnesses and injuries, and restore health through diagnosis and treatment. They examine patients, discuss medical issues, think about various conditions, and document patient information. Becoming a doctor involves a long education, including undergraduate study and sitting entrance exams. It can be rewarding but also challenging, with long hours and responsibility. Aspiring doctors need strong interpersonal skills like empathy, confidence, and respect. Science subjects are required for medical school, with chemistry, physics and biology desirable.