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A growing number of companies are selling mats with nail-like plastic spikes that they say can relieve stress, alleviate neck and back pain, and even help with insomnia. Taryn Winter Brill reports.
Read More »A growing number of companies are selling mats with nail-like plastic spikes that they say can relieve stress, alleviate neck and back pain, and even help with insomnia. Taryn Winter Brill reports.
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