An Expo can be a one day event or run for during several days. It can be organized in many different locations: at a fair, in a public mall, in schools or church buildings, in a town park, or in a market place. The Expo's greatest usefulness is when it is combined with a series of health seminars that follow the Expo within a week or two, presenting topics such as stress management, chronic disease prevention, mental and spiritual health, nutrition classes, etc. These are excellent ways for meeting the needs of local communities. 