I measured my stress levels while working with blue light glasses - and was surprised by the results

This ZDNET article recounts a personal experiment measuring how blue-light-blocking glasses, Night Shift, using a TÜV low blue light display, avoiding screens, and a short meditation session affected the author's cortisol levels and perceived sleep quality; the author concludes that avoiding screens or practicing deep breathing lowered cortisol, and re-enabled Night Shift for general use.