Although knowing how to administer first aid for injuries and illnesses is extremely important, a healthy lifestyle and awareness of possible dangers can prevent many problems. A healthy lifestyle typically includes eating well, exercising, and following routine safety rules. This lifestyle may require changes in the way you approach things, which is not easy to do. This section will help you understand the need to maintain a healthy lifestyle at home, at work and during leisure. The key to health and safety is prevention. Take care of your well-being and the health of your loved ones in advance. A healthy lifestyle can prevent injury or illness. We have heard more than once different advice on how to maintain our own health. A balanced diet and exercise are not new opinions. What we really need to do is take action. This chapter provides an overview of the basic principles of a healthy lifestyle.