How well you slept last night and when you felt sleepy to go to bed, and how you felt on w

Well SupportedSunlight exposure should ideally occur within the first two hours of waking, or from a 10,000 lux light source if natural sunlight is not available.

Well SupportedIncreased time outdoors without sunglasses is recommended if sunlight exposure is limited due to overcast conditions.

Well SupportedMaximizing sleep requires getting outdoor light exposure, including full spectrum, infrared, and potentially ultraviolet light, first thing in the morning.

Not SupportedAvoid looking directly at painfully bright light sources, whether artificial or sunlight.