Card 32 / 49: Which of the following is NOT a useful psychological treatment for insomnia?
A) Restricting sleeping hours to the same nightly pattern.
B) Controlling bedtime stimuli so that your bed is associated only with sleep or sex, not insomnia.
C) Ingesting certain substances, such as chocolate or alcohol, before bed.
D) Regularly doing aerobic exercise about four times a week.

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