How Much Water Do You Need? Hydration Myths | NASM CNC Lesson 11

Free NASM Certified Nutrition Coach (CNC) exam prep — Chapter 11: water's roles in the body, water balance and ADH, daily fluid needs, dehydration and hyponatremia, electrolytes, sodium-to-salt conversion, and hydrating before, during and after exercise. Part of a free 24-lesson study series from The Flex Cult. "Eight glasses a day" and "coffee dehydrates you" are two of the most repeated hydration rules — and neither holds up the way people think. This lesson covers water balance and ADH, daily fluid needs, dehydration versus hyponatremia, electrolytes and sweat rate. In this lesson, you'll learn to: • Describe how much of the body is water, where it sits, and what it does • Explain how the body balances water in and water out — including thirst, and a hormone called ADH • Estimate daily fluid needs and use practical checks for hydration • Tell dehydration and hyponatremia apart and know when to refer • Explain the key electrolytes and plan fluids around exercise — including working out a sweat rate 📘 Full written notes: https://theflexcult.com/certification... 📄 Free PDF notes & slide deck (linked on the lesson page) 🧠 Knowledge-check quiz — scored against the real 70% passing bar 📝 Section 2 cram sheet: https://theflexcult.com/downloads/nas... 🗺️ Chapter Lookup Map: https://theflexcult.com/downloads/nas... ▶️ Next: Lesson 12: https://theflexcult.com/certification... 🎓 Full playlist:    • NASM CNC Exam Prep — Free 24-Lesson Nutrit...   🔔 Subscribe:    / @theflexcult   Chapters: 0:00 Intro 00:26 What you'll learn 01:14 Water in the Body 02:06 Water Balance: Intake vs Losses 02:51 How the Body Keeps the Balance 03:42 How Much Fluid Do People Need? 04:52 Dehydration vs Overhydration 06:05 Electrolytes 07:06 Hydration Before, During and After Exercise 08:09 Worked Example: Kabir's Sweat Rate 08:56 Coaching Hydration 09:36 Practice questions 11:58 Key Takeaways 13:08 Up next This is a free, independent NASM Certified Nutrition Coach (CNC) study series from The Flex Cult, written by Riya Sharma. Not affiliated with, endorsed by, or acting on behalf of the National Academy of Sports Medicine (NASM). "NASM" and "NASM-CNC" are trademarks of their respective owners. This series does not issue an official certification, and nothing in it is medical or dietary advice. #NASMCNC #NutritionCoach #Hydration