Comment A, B, C, or D and we’ll DM you the answer to how much water you *actually* need — plus a link to learn more on Daily Dose. What’s Daily Dose? Bite-size, 5-minute lessons from Healthline that cut through the noise and help you build lasting healthy habits—one small step a day. Join for quick, curated guidance for a stronger heart and smarter hydration. Before you read it, we reviewed it. Post Fact Checked By: Healthline Medical Standards & Insights Team Post Review Date: 2/4/26 Lesson Fact Checked By: Cynthia Taylor Chavoustie, MPAS, PA-C Source: A. L. Heywood. (2025, August 12). dailydose.healthline.com/lesson-preview/hydration-and-your-heart #dailydose #hearthealth #water #hydration