Morning Sunlight

Get 10–15 minutes of natural light to regulate your circadian rhythm. When bright light (photons) hits specialized cells in your eyes called ipRGCs, they send a direct signal to the Suprachiasmatic Nucleus (SCN)—the master clock in your brain. This triggers an immediate release of Cortisol, which acts as a natural alarm clock, increasing your alertness, focus, and body temperature for the day The Sleep Timer (Melatonin Reset) Stops Melatonin: It tells your brain to stop producing melatonin immediately so you don't feel "groggy.» Starts a Timer: It sets a biological timer for approximately 14–16 hours later. By getting light at 7:00 AM, your brain is "programmed" to start producing melatonin naturally around 9:00 PM or 10:00 PM Indoor Light Isn't Enough Lux (Light Intensity): A typical bright office is about 500 lux. Even on a cloudy day, being outside provides about 1,000–10,000 lux. On a sunny day, it can be over 100,000 lux The Window Barrier: Glass filters out many of the blue-light wavelengths needed to trigger your SCN. To get the benefit, you must be outdoors Duration Based on Weather Sunny day: 5–10 minutes is enough Cloudy day: 15–20 minutes is needed Very overcast/Dark day: 30 minutes may be required to get enough light energy. - Helps regulate blood sugar and appetite - Triggers Serotonin release, reducing symptoms of anxiety and depression. - Morning light is the #1 predictor of how quickly you will fall asleep at night.