People with Insomnia Can Lower Their Arousal Level Before Sleep

Multiple Choice

People with insomnia can lower their arousal level before sleep by doing all of the following EXCEPT

A) using progressive muscle relaxation.
B) using meditation or blotting out worries with calming images.
C) writing down worries or concerns and planning what to do about them the next day.
D) engaging in strenuous exercise one to two hours before bedtime.