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How can I prevent insomnia?

Healthy sleeping hygiene, or good sleeping habits, have proven effective in dealing with acute insomnia. Most importantly, maintain a regular sleeping schedule: try to go to sleep and wake up at the same time every day and avoid naps. Devices with screens, like e-readers and cell phones, emit a light that makes it difficult for you to sleep at night. Exercise regularly and avoid caffeine and nicotine 3−4 hours before bed.