It’s Not Just Hydration That Matters in Hot Weather—Fitness Levels Do, Too

Research suggests the temperature outside is only a partial factor in your risk of suffering heat illness.

https://www.runnersworld.com/news/a33445734/link-between-hydration-fitness-and-heat-illness-study/?utm_campaign=socialflowTWRW&utm_source=twitter&utm_medium=social-media