Exposure to natural light is crucial for regulating our circadian rhythms, which control our sleep wake cycles. During the winter months, the lack of daylight can disrupt this rhythm, and lead to fatigue.
A study published in the Journal of Affective Disorders shows that light therapy—using a light box to simulate sunlight—can improve energy levels and combat Seasonal Affective Disorder (SAD).
If you can't invest in a light box, then try to spend time outdoors during daylight hours, especially during the morning.
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