This question is about Running
Runners should primarily drink water, both in and outside of exercise, to meet their daily hydration needs. However, including other liquids, such as electrolyte-rich sports drinks, can also provide necessary carbohydrates, aid in hydration and improve electrolyte intake and balance. When running, water and electrolytes are lost in sweat so it is important to make sure you replace depleted nutrients with water and/or beverages that contain carbohydrates and electrolytes, namely sodium [ 1 2
Runners can also drink caffeinated beverages 3
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Jensen, T. E., & Richter, E. A. (2012). Regulation of glucose and glycogen metabolism during and after exercise. The Journal of physiology, 590(5), 1069–1076. https://doi.org/10.1113/jphysiol.2011.224972
Vitale, K., & Getzin, A. (2019). Nutrition and Supplement Update for the Endurance Athlete: Review and Recommendations. Nutrients, 11(6), 1289. https://doi.org/10.3390/nu11061289