That does not factor in genetic predisposition to sensitivity to the circadian stimulating effects of blue light. Some people aren't much affected by screen ti

That does not factor in genetic predisposition to sensitivity to the circadian stimulating effects of blue light. Some people aren't much affected by screen time at night, and some people can readily get up before dawn. I for one have to be very careful to limit my exposure at night, and waking up before sunrise (artificial or natural) is excruciating. I have been diagnosed with DPSD. I vastly prefer to go to bed and wake up later than average