Today, due to numerous medical and scientific advances, people are living longer than ever before. But you have to be good to your body, mind, and soul. The following tips are a good start for getting you on your way to living a long and healthy life.     Eat a balanced diet -- one that is rich in fruits, vegetables, whole grains, and fiber and low in saturated fat, trans fat, and cholesterol. A well-balanced diet can provide your body with the essential nutrients needed to achieve and maintain optimum health.   Be physically active -- try to incorporate 30 minutes of activity into your day, every day. The options are endless; start walking on the beach in the mornings, try jogging with a friend, or go for a bike ride in the afternoons. Make sure you choose activities that you enjoy, that way you'll be more likely to make them a habit.     Get regular preventive check-ups --see your doctor regularly; remember your doctor is your partner in health care. By having regular check-ups, you may be able to catch small problems before they become big ones.     Be safe -- use common sense and be streetsmart  . Don't put yourself in situations that are questionable. Always wear your seatbelt and bike helmet. Don't go for a run, walk, or jog at night by yourself. Keep your home well lit and free of things that could make you fall.     Stay in touch with family and friends -- get to know your neighbors. Take the time to be involved with your community. By creating a strong social network, you will not only have friends to celebrate with when good things happen, but also a support system in difficult times.     Keep a positive attitude -- studies have shown that people who have a positive attitude tend to live longer, and lead healthier and happier lives. Try to find the humor in life. And remember to laugh. How does the author organize the passage?
By giving the definition. By following the order of space By explaining the reasons. By finding some problems