#uncat 

Muscle tissue has more water than fat tsissue

~3/4 of the water in your body is **intracellular fluid**
The rest is **extracellular fluid**, i.e:
- interstitial fluid (the fluid between cells)
- blood plasma
- lymph
- bodily secretions
- urine


## Fluid balance
The core principle of fluid balance is that the amount of water lost = the amount of water taken in

The body maintains its fluid balance through the action of electrolytes (usu meant to describe sodium, potassium, and chloride)

![[Pasted image 20250702224010.png]]

>[!How does water know where to go?]
>![[Pasted image 20250702224051.png]]

![[Pasted image 20250702224155.png]]

Daily losses of water:
- 0.85-1.2 L lost in breath and perspiration
- 0.6 - 1.6 L lost in urine
- 0.05-0.2 L lost in feces

Not all water you need is from plain water:
- some is created when you digest and metabolize food
- food (vegetables, EVEN FUCKING HAMBURGER)

---
Sodium
Usually (not always) about 3.4 g of sodium a day are protective against hypertension and other forms of heart disease

Potassium and chloride
So prevalent nearly impossible to get a deficiency

Oral rehydration therapy:
![[Pasted image 20250702225439.png]]
(1:1 sugar to salts molar ratio)

You need extra water if you're on a high-protein diet (to eliminate the risk of gout)

>[!Dehydration]
>![[Pasted image 20250702225558.png]]
>![[Pasted image 20250702225637.png]]