Meditation is an inward journey. It has been practiced for millennia in many forms by individuals from many different faiths and backgrounds. Meditation itself is not a religion, although it forms a part of many religions. It is not a form of therapy, although it can be an important component in personal growth and self-help.
Meditation does not involve special diets or unusual physical postures. It is a simple and natural process that activates the innate ability of the mind and body to heal and purify itself.