Your bedroom is one of the strongest sleep cues your body receives at night. A cool, dark, and quiet environment helps signal that the day is over and supports the physiological changes needed for sleep. Before changing evening behaviours, it is worth making sure the room itself is working with your biology.

This week’s focus is morning light exposure. Your challenge is to get outside within 30 minutes of waking at least 4 mornings this week. Aim for 5 to 10 minutes outdoors, or longer if possible. Keep your sunglasses off if it is comfortable and safe to do so, avoid looking directly at the sun, and pay attention to how your energy, alertness, and sleep respond across the week.

Morning light is the most powerful signal for regulating your circadian rhythm. Exposure to natural light shortly after waking helps increase alertness, supports healthy cortisol timing, and sets the stage for melatonin release later that night. Many people focus on improving sleep at night while overlooking the signals that begin the process in the morning.

A circadian rhythm that is misaligned often feels like constant friction. Common signs include feeling alert late at night but tired during the day, energy crashes, difficulty falling asleep despite fatigue, and needing weekends to recover from the week. Circadian disruption can be subtle, but timing mismatches between light, food, movement, and sleep can significantly affect how you feel and function.

You fix your circadian rhythm by consistently placing key signals like light, food, and activity at the right times of day. Morning light, stable wake times, earlier meals, and a protected evening are the highest-leverage changes. It is not about doing more, but about timing what you already do.