Meditation has a wide range of benefits, The physiological effects have been documented by scientific studies in Indian yogis, Zen monks, and other practitioners of meditation. The mechanism produces these changes is not fully understood, but meditation seems to relieve stress and ease tension. The beneficial effects are not caused simply by keeping still; for one thing, the brain wave patterns recorded during meditation have been shown to differ from those seen during sleep.
Among the other reactions observed are lowered oxygen consumption and heart rate and, after habitual practice, a drop in blood pressure. Physicians treated people with mild hypertension have recommended meditation (combined with dietary and other changes) before the prescribe drugs.
Meditation has been shown to decrease the levels of lactic acid in blood. And because lactic acid is thought to be associated with anxiety, this effect is of paramount importance for most people. Indeed, some psychotherapists now use mediation to help patients deal with emotionally charges issues.
Over the years, even those seeking practical benefits have cherished the spiritual rewards of meditation. Many people say that during meditation they reach a mystical sense of oneness with god or with the universe. And although we thing of mystics as dreamy and otherworldly, many spiritual sages emphasize that their ultimate aim is not isolation but greater involvement with others.
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