 | difficulties in, 7
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 | drugs and, 21
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 | increasing, 121
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 | points to remember, 119-120
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 | sleep stage and, 15
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 | techniques for, 121-125
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 | recurring dreams, 86
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 | recurring themes and symbols, 160-163
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 | Reed, Henry, 167, 183
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 | relaxation, 174
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 | religion, dreams in, 27-37
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 | REM. See rapid eye movement (REM) sleep
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 | remembering dreams. See recalling dreams
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 | research on dreaming, 2, 9, 10, 13, 14, 22, 74, 81, 206
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