There may be odd bodily twistings, obsession with posture, and painful tensions or strange other sensations, particularly in the back, neck, jaw and shoulders. These tensions may persist when not meditating and be quite irritating and even debilitating. The rhomboid and trapezius muscles are the most common offenders. It is common to try to sit with good posture and then find one's body twisting into some odd and painful position. You straighten out, and soon enough it does it again. That's a very Three Characteristics sort of pattern. People sometimes describe these feelings as some powerful
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