Not op, but I actually remember reading about a study where exposure to red light before waking up can help with addressing alertness after waking. Here it is:

Not op, but I actually remember reading about a study where exposure to red light before waking up can help with addressing alertness after waking. Here it is: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6506010/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6506010/ I also know that astronomers use red light while ‘scoping as it doesn’t impact the eyes sensitivity