The term lifestyle center is used in a variety of ways. The most common use is to refer to a clinical center where lifestyle intervention is used in the treatment of patient's lifestyle-related conditions. Lifestyle-related conditions are those diseases which result from unhealthy lifestyle practices. Lifestyle centers can be inpatient (residential) or outpatient. Programs at inpatient lifestyle centers typically run from 12 to 18 days but vary by program.Clinical lifestyle centers often involve placing a patient on a heart-healthy, plant-based diet and starting them on a vigorous exercise program.