Water plays an important role in exercise, especially for thermoregulation. Inadequate hydration or dehydration not only affects performance, but also causes serious health complication or even death, if not managed properly. In Singapore’s hot and humid weather, the risk of dehydration through sweat loss during exercise is even more significant. Fluid loss of 3%-5% of body weight results in cardiovascular strain and impaired function to dissipate heat. Collapse is likely at 7% loss. 
Here are several tips on combating dehydration during exercise
The guidelines for proper hydration are shown below 
 Greenleaf, J. E., & Harrison, M. H. (1986). Water and electrolytes.
 Sports Singapore (2017, March 16). Safety Resources & Useful Links. Heat Disorders Prevention Guide. Retrieved from https://www.sportsingapore.gov.sg/sports education/sports-safety/safety-resources-and-useful-links
All information presented on this site is meant for general purposes. It is not meant to replace health and medical advice from healthcare professionals.