Health, the state of physical or mental well-being is an important requirement for each one of us. Being healthy is essential for going about everyday life in an energetic and fruitful manner. To keep physically fit or healthy, a person needs to have a good diet and exercise regularly. Regularity is the key to being and remaining healthy. A healthy mind lives in a healthy mind. Keeping oneself physically fit and mentally healthy is important both for the individual as well as for the society or the nation.Medicine is the study that is all about healing. The branch of knowledge uses a variety of techniques and medicines in the form of pills, gels and others to treat a person suffering from any disease. Medical practitioners or doctors are the ones qualified to practice and are experts in the field. Trained to deal with both physical and mental diseases, medicine is a science that has evolved over thousands of years.