Neuroscientist Dr. Randy J. Nelson explores how artificial light at night disrupts our bodies, from immune health to mood.

We’ve rounded up the best baby and toddler night lights for 2025 and asked Rosey for her top tips on what features parents should look for to support healthy sleep habits.

Light sleep or (Non-REM sleep) plays a role in the sleep cycle helping the body move into deep sleep modes. You usually spend more time in “light sleep” in the early part of the night.

The average adult needs around four to six hours of core sleep every night to hit the most vital stages of rest and protect ...

Stage 1: Transitional sleep The sleep cycle begins with the shortest stage of sleep. The light sleep stage accounts for just 5% of our overall sleep each night.

Sleeping in pitch-black darkness might not be the key to better sleep. Here’s why a little light at night could actually help your health.

Then at night again, to keep that contrast, to make the body understand that this was day and this is night when we're supposed to wind down for sleep, that's when we need the lights down and not ...

Exposure to light at night, even at very low levels, has been linked to an increased risk of depression, according to a study published this month in the American Journal of Epidemiology. In ...