Ayurveda is called life science because it gives importance to healthy living and prevention of diseases rather than treatment of diseases.Association of daily routine of an individual with his health goes a long way in deciding the quality of life he leads.Ayurveda gives equal importance to Ahara and Vihara. Vihara is defined as the second most important pillar of the Ayurveda. The modern world is currently facing an epidemic of lifestyle related diseases like diabetes, obesity, heart diseases, etc., as a result of stress, improper diet and irregular or sedentary lifestyle. Analyses of the texts revealed that these preventive aspects, if adopted in daily routine by patients of lifestyle disorders can improve their quality of life and maintain good health. In this study,dinacharya were analysed and various regimens in diet and lifestyle as mentioned in the classics of Ayurveda and their importance on lifestyle disorders has been discussed.