Meditation and Chromosome showing Telomerase Activity: The stress and strife of daily life can take a toll and even our chromosomes may be affected. Chromosomes are capped at their ends by protective structures called telomeres, which play a key role in cell division. Telomeres shorten, however, every time a cell divides, which ultimately sets a limit on cellular lifespan; the telomeres of individuals under great stress unravel even faster. An enzyme called telomerase, however, helps maintain and repair telomeres and a recent study suggests that intensive meditation training may increase telomerase activity in immune cells.
Meditation is a practice in which an individual trains the mind or induces a mode of consciousness, either to realize some benefit or as an end in itself.
The term meditation refers to a broad variety of practices (much like the term sports) that includes techniques designed to promote relaxation, build internal energy or life force (qi, ki, prana, etc.) and develop compassion, love, patience, generosity and forgiveness. A particularly ambitious form of meditation aims at effortlessly sustained single-pointed concentration meant to enable its practitioner to enjoy an indestructible sense of well-being while engaging in any life activity.
The word meditation carries different meanings in different contexts. Meditation has been practiced since antiquity as a component of numerous religious traditions and beliefs. Meditation often involves an internal effort to self-regulate the mind in some way. Meditation is often used to clear the mind and ease many health issues, such as high blood pressure, depression, and anxiety. It may be done sitting, or in an active way—for instance, Buddhist monks involve awareness in their day-to-day activities as a form of mind-training. Prayer beads or other ritual objects are commonly used during meditation in order to keep track of or remind the practitioner about some aspect of the training.
Meditation may involve generating an emotional state for the purpose of analyzing that state—such as anger, hatred, etc.—or cultivating a particular mental response to various phenomena, such as compassion. The term "meditation" can refer to the state itself, as well as to practices or techniques employed to cultivate the state. Meditation may also involve repeating a mantra and closing the eyes. The mantra is chosen based on its suitability to the individual meditator. Meditation has a calming effect and directs awareness inward until pure awareness is achieved, described as "being awake inside without being aware of anything except awareness itself." In brief, there are dozens of specific styles of meditation practice, and many different types of activity commonly referred to as meditative practices.
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