Each week, the Star-Tribune introduces a specific challenge, sets snooze goals, and provides information about the science of sleep.

Feb. 13 Reading is a great way to wind down in the evening. But try to stick to something calming. “Don’t read about politics,” said sleep expert Dr. Conrad Iber. He has clients who report having trouble sleeping because they read political books “and then they start debating it with their spouses.”

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