Meditation is generally an inwardly oriented, personal practice, which individuals can do by themselves. Prayer beads or other ritual objects may be used during meditation. Meditation may involve invoking or cultivating a feeling or internal state, such as compassion, or attending to a specific focal point. The term can refer to the state itself, as well as to practices or techniques employed to cultivate the state.
There are dozens or more specific styles of meditation practice; the word meditation may carry different meanings in different contexts. Meditation has been practiced since antiquity as a component of numerous religious traditions.
A 2007 study by the U.S. government found that nearly 9.4% of U.S. adults (over 20 million) had practiced meditation within the past 12 months, up from 7.6% (more than 15 million people) in 2002.
Since the 1960s, meditation has been the focus of increasing scientific research of uneven rigor and quality. In over 1,000 published research studies, various methods of meditation have been linked to changes in metabolism, blood pressure, brain activation, and other bodily processes. Meditation has been used in clinical settings as a method of stress and pain