Blue Light And Your Brain
A few thousand hidden cells in your eyes are tuned specifically to blue light. When your screen activates them at night, your brain thinks the sun is still up.
Sleep Routines That Actually Work
Sleeping pills lose to a behavioral technique most people have never heard of. The two most effective strategies for insomnia do not involve your mattress, your phone, or a fixed bedtime.
The Right Way To Nap
A 10-minute nap boosts alertness for hours, but sleep past 30 minutes and your brain punishes you with a fog that can last longer than the nap itself.
The Rest You Are Missing
You slept eight hours and still woke up exhausted. The problem is not how much you are sleeping. It is the six other types of rest you are not getting.
Why Your Brain Dreams
For two hours each night your brain generates entire worlds from scratch. Three competing theories explain why, and all of them may be right.
When Cortisol Stays Too Long
Cortisol is not the villain. In short bursts, it sharpens focus and mobilizes energy. The problem starts when the threat never quite ends and the off switch never fully engages.