That bright, blue-rich light signals to your brain that it’s definitively daytime, helping to anchor your internal clock and set up a proper sleep-wake cycle.

Blue light has acquired a dubious reputation in recent years, frequently blamed for everything from disrupted sleep patterns to digital eye strain. This high-energy light, emitted abundantly by ...

Blue Light Sources. Americans spend an average of 7 hours a day on electronic devices. That’s a lot of time staring at blue light. Worse yet, nine out of 10 Americans admit to reaching for an ...

bright screen light — across 11 experimental studies, people who used a bright screen emitting blue light before bedtime fell asleep an average of only 2.7 minutes later.

bright screen light – across 11 experimental studies, people who used a bright screen emitting blue light before bedtime fell asleep an average of only 2.7 minutes later. In some studies, people ...

There are many factors that can affect sleep, and bright, blue screen light likely isn’t one of them. The take-home message is to understand your own sleep needs and how technology affects you.