Staying healthy physically can help you stay healthy emotionally too. If you're eating the right food and keeping fit, your body will be strong and help you to cope with stress and also fight illness. Eating well and exercising often when you're a teenager will also help you stay in good health later in life. You can keep fit and stay healthy by some the following tips:Eat healthy , get regular exercise it can help prevent heart disease, stroke, diabetes, and colon cancer, lose weight if you're overweight...Eat a variety of nutrient-rich foods. -Your daily food selection should include bread and other whole-grain products; fruits; vegetables; dairy products; and meat, poultry, fish and other protein foods and enjoy plenty of whole grains, fruits and vegetables.Health can be defined as physical, mental, and social wellbeing, and as a resource for living a full life. ... Factors for good health include genetics, the environment, relationships, and education. A healthful diet, exercise, screening for diseases, and coping strategies can all enhance a person's health.Our healthy is very important, so you need to protect it carefully.