Getting light in the evening delays the circadian clock, preventing early morning waking and maintaining a predictable sleep-wake cycle.

“By getting light in the evening it accomplishes two things for me. First of all, it makes sure that I don't get up too early that I'm not waking up at 3:00 or 4:00 in the morning because it's going to shift my clock. It's going to delay it a little bit.”

“light viewing early in the day is the most powerful stimulus for wakefulness throughout the day and it has a powerful, positive impact on your ability to fall and stay asleep at night.”

“the morning light is going to advance my clock make my system want to get up earlier and the evening light is going to delay my clock a little bit so that on average it kind of bookends my circadian mechanisms and basically want to go to sleep at more or less the same time each night and wake up more or less at the same time each morning”

“I'm a big proponent of people getting uh some sunlight, ideally sunlight, but other forms of bright light in their eyes early in the day and when they want to be awake. Yep. Essentially during the phase of their 24-hour circadian cycle when temperature is rising and then starting to get less light in their eyes as our temperature is going down in ter later in the day and in the evening.”

“getting uh morning and evening sunlight in my eyes would set my circadian rhythm”

“1. Wake, light in eyes.”

“But what I have found for me is bright light exposure. So you wake up in”