It's not the number of missives in your inbox that causes anxiety, but how much time you spend reading and responding to them, researchers have found. Keep e-mail from dominating your life by dedicating certain times to respond and encouraging others to reach you via phone after work hours, experts say. "Even if you give out your cell phone number, people will feel like, 'Ugh, should I really call her?' They'll only do it if it's really urgent, or they'll wait," says Stine Grodal.
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