Sleeping with even a little light can be unhealthy, study finds : Shots - Health News : NPR

Just a night or two of exposure to faint light is enough to raise your pulse and increase insulin resistance — factors that increase the risk of heart disease and diabetes, researchers find.

How light resets your internal clock : Shots - Health News : NPR

How light resets your internal clock : Shots - Health News : NPR

Why We Sleep: Unlocking the Power of Sleep and Dreams: Walker PhD

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A sleep mystery: What's behind 'precision waking' : Shots - Health

Sleep apnea caused cognitive problems even in healthy men

Why We Feel Exhausted And Irritable And Lack Focus During The

Here's an argument against daylight saving time from sleep doctors

How to stop revenge bedtime procrastination and get better sleep