A healthy life consists of healthy eating habits, exercise, medical checkups, and spending time in nature. Teenagers need a balanced diet of about 2500 calories per day, including 50% carbohydrates, 25% protein, and 10-5% of vitamins, minerals, and fat. Doctors regularly check teenagers' weight, height, blood pressure, hearing, and vision, and offer sports and lifestyle advice. Exercising 3-4 times per week and being physically active through walking, biking, or home exercises can contribute to good health. Healthy snacking includes fruits, cereals, and oats to avoid sugar and salt.