reading a kindle before bed?

Andrew Huberman suggests the use of red light to improve sleep quality. He recommends replacing blue light sources with red lights in the evening, particularly during activities such as reading. Red light reduces blue wavelength exposure, which can interfere with sleep by inhibiting melatonin production. This adjustment helps lower cortisol levels, making it easier to fall asleep. Huberman mentions using a dimmable red light bulb to further enhance the sleep-promoting environment 1.