067. sleep mode: the impact of blue light (ks4)
Understand the biology of sleep and discover how the blue light emitted by digital screens disrupts your natural circadian rhythm.
We all know that looking at our phones before bed is a bad idea, but do you know the biological reason why? It all comes down to the colour of the light. We will explore how the blue light emitted by your screens tricks your brain into thinking it is daytime, disrupting your circadian rhythm and making a good night's sleep almost impossible.
Last modified: March 26th, 2026
