I talk about light from two different perspectives. We want more natural light early in the day, but we don’t want excess exposure to blue light too close to bedtime. Blue light can come from the sun, but it can also come from electronic devices like computer screens, phones, and tablets. If we are using electronic devices at night, it increases our exposure to blue light. If we get too much blue light at night, it interferes with melatonin production. Melatonin production is important because it helps us want to sleep at night. So how do we balance the two? I'll talk about that in this episode.