Keep hydrated
Your body needs a steady supply of fluid to make up for what's lost when you exhale, sweat, and urinate. Hydration is a day-long process. Water is the best replacement fluid. It has 100% of what you need — pure H2O — and no calories or additives.
Disclaimer:
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.
No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.