Meditation is a practice where an individual uses a technique – such as mindfulness, by focusing their mind on a particular object, thought or activity – to train attention and awareness, and achieve a mentally clear and emotionally calm and stable state. Meditation has been practiced since ancient time in numerous religious traditions and beliefs, often as part of the path towards enlightenment and self realization. Since the 19th century, it has spread from its origins to other cultures where it is commonly practiced in private and business life. Meditation may be used with the aim of reducing stress, anxiety, depression, and pain, and increasing peace, perception, self-concept. Meditation is under research to define possible health (psychological, neurological, and cardiovascular) and other effects.