Fits most people
Popular first step.
Find out how easy it is to fall asleep and how great it is to wake up fresh just by giving your body the right natural cues. The most important one being:
No blue light after dark.
- Red for nights
- Orange for after sunset walks
- Yellow for evening sports
Not for all day use, and driving. Blue light is what keeps us up, don't try to remove it during daytime while driving.
Most artificial light siources emits blue and green light.
Glasses are the easiest way to block all of them.