Summer Hydration Needs explores the critical link between adequate water intake during hot weather and its impact on public health. Did you know that dehydration can lead to severe consequences like heatstroke and kidney problems? The book explains the science behind hydration, focusing on how our bodies respond to heat stress and maintain fluid balance, or thermoregulation. It highlights that current hydration guidelines may not fully address individual needs during extreme heat, potentially endangering vulnerable populations. The book progresses logically, beginning with the basics of hydration and dehydration. It then examines the impact of high temperatures, including how heat alters electrolyte balance. Finally, it offers practical, evidence-based strategies for optimizing hydration for individuals, healthcare professionals, and public health officials. By connecting physiology, environmental science, and public health, Summer Hydration Needs provides valuable insights and recommendations for improving summer health and mitigating heat-related illness.