Progressive muscle relaxation (PMR) is a deep relaxation technique that has been shown to effectively relieve insomnia and symptoms associated with certain types of chronic pain. The correct option is C.
Insomnia is a sleep disorder that causes difficulty falling and/or staying asleep. The condition can be short-term (acute) or chronic (chronic).
Progressive muscle relaxation (PMR) is a deep relaxation technique that has been shown to effectively relieve insomnia and symptoms associated with certain types of chronic pain.
Thus, the correct option is C.
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