Frequent illness and fatigue often stem from disrupted sleep rhythms rather than simple nutritional deficiencies. This article explores how restoring the body's natural circadian rhythm improves immune cell activity (NK cells) and provides a holistic approach to strengthening your defense system based on clinical research.
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Why Immunity Drops: Sleep Rhythm Comes Before Supplements (Research-Based)
Dalimchae's Guide to Strengthening Immunity through Sleep Rhythm and Autonomic Balance
