caffeine study benefits
Unlock Longevity Science Coffee‑L‑Theanine Focus Boost
Direct answer: The coffee-L-theanine combo boosts focus and reduces anxiety, making it a top biohack for students. In a 2023 double-blind trial, 80 mg caffeine plus 200 mg L-theanine lifted sustained attention by 23%, showing that the pair can extend neurocognitive longevity during marathon study sessions. Medical Disclaimer: This article