Lethargy often stems from poor sleep, dehydration, stress, or nutrient gaps. Start with consistent sleep schedules, morning light exposure, and regular movement to restore circadian rhythm. Hydration and balanced meals with protein, complex carbohydrates, iron, and B vitamins support energy metabolism. Manage stress through brief mindfulness breaks and workload prioritization. Limit excessive caffeine and alcohol, which disrupt recovery. Address underlying conditions with a clinician, especially persistent fatigue. Supplements may help selectively, but avoid self-prescribing medications. In healthcare supply discussions, terms like cephalexin capsules wholesale may appear; antibiotics are not remedies for lethargy unless treating a confirmed infection appropriately and safely.