Is there an ideal number of minutes after actual sunrise for the earliest morning sun to have an optimal effect on SAD and circadian...

A reader asks:  Is there an ideal number of minutes after actual sunrise for the earliest morning sun to have an optimal effect on SAD...

Does the time of day matter when undergoing surgery? …

A reader asks:  Does time of day matter when undergoing surgery? I realize that a patient is at the mercy of the hospital scheduler, but...

I would like to know what to do about my severely advanced circadian rhythm!

A reader asks:  I would like to know what to do about my severely advanced circadian rhythm! Answer: Here are some strategies: (1) Keep your room lights...

I am considering using a light box to adjust my circadian rhythm, which is now severely delayed. …

A reader asks: I am considering using a light box to adjust my circadian rhythm, which is now severely delayed. I live in an apartment...

Do people who suffer from SAD usually have circadian rhythms that are somewhat “off”? …

A reader asks: Do people who suffer from SAD usually have circadian rhythms that are somewhat "off"? I am just curious since you have said...

Is it true that for society in general, people have a mind of their own by disrespecting or not taking account of their circadian...

A reader asks:  Is it true that for society in general, people have a mind of their own by disrespecting or not taking account of...