Meditation is a practice in which an individual trains the mind and/or induces a mode of consciousness to realise some benefit, although it can be argued that meditation is a goal in and of itself. The term meditation refers to a broad variety of practices (much like the term sports), which range from techniques designed to promote relaxation, contacting spiritual guides, building internal energy (chi, ki, prana, etc.), receiving psychic visions, getting closer to God, seeing past lives, taking astral journeys, and so forth, to more technical exercises targeted at developing compassion, love, patience, generosity, forgiveness and more far-reaching goals such as effortlessly sustained single-pointed concentration, single-pointed analysis, and an indestructible sense of well-being while engaging in any and all of life's activities (Wikipedia
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Now, Plug in your headphones, sit back and just relax.