Poor Sleep Quality: Interrupted or non-restorative sleep affects alertness.
Sleep Disorders: Conditions like sleep apnea or insomnia disrupt sleep patterns.
Nutritional Deficiencies: Lack of essential nutrients, especially iron or vitamin D, can cause fatigue.
Stress and Anxiety: High stress levels and anxiety can interfere with sleep quality.
Medical Conditions: Conditions such as hypothyroidism or depression can cause constant sleepiness.
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