L-theanine and caffeine
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More Than Caffeine: How Electrolytes, Vitamins, and L‑Theanine Fuel Steady Energy
B vitamins energy metabolism, caffeine alternatives, electrolyte drink for work, electrolytes for energy, energy for nurses long shifts, evidence-informed supplements, focus and calm energy, how to avoid caffeine crash, hydration and fatigue, L-theanine and caffeine, practical energy tips, real-world wellness, SHIFT hydration, steady energy without jitters, wired but tired solutions