New research shows that blue light from phones affects sleep less than many people think. Scientists say that how much light people get during the whole day and their daily habits are more important for good sleep.

For a long time, blue light from screens was believed to make falling asleep difficult because it could change the body’s natural clock. However, experts now say that the blue light from phones is not strong enough to cause serious problems.

Researchers suggest that spending more time in daylight and less time with exciting content before bed can improve sleep. They recommend daily routines with bright mornings and darker evenings.