The following article sheds some  light on the importance of proper hydration before, during, and after  class. You may also want to check out the "elete" electrolyte mineral supplement tablets or liquid drops to add to your drinking water sold at our studio. 
by Lucas Rockwood of YOGABODY Naturals.  
Yoga students 
often become obsessed  with hydration to the point where they’re never 
without a water bottle.  It just becomes part of you. Your wallet, your 
keys, your ID, and a  bottle of water. It’s really that important.
And yet as a teacher, I’m constantly getting questions about how to  
avoid dehydration. Despite the awareness, many students still find  
themselves  with constipation, headaches, and dark circles around their 
eyes simply  because they’re dehydrated. 
Depending on the
 temperature of the  room and the style of yoga you’re practicing, it’s 
possible to lose  an enormous amount of water during a 90-minute 
practice. Hot Yoga  students  need to be most concerned; but on warm 
days, just about any  Ashtanga-Vinyasa  or Power Yoga class quickly 
turns into a sweat-fest too, so the question   that arises is: “How do 
you properly rehydrate?”
STEP 1:
 Make sure you are  hydrated  BEFORE class. This doesn’t mean that you 
should drink two liters of  water just before practice, but it does mean
 making sure that throughout   your day, you maintain a healthy intake 
of water (and no, coffee doesn’t   count). 
STEP 2: 
 During class, follow your teacher’s instructions. If it’s a class  
where water is accepted (like Bikram Yoga, for example), then you’ll  
absolutely want to bring water. If it’s a class where water is optional,
   be your own judge. And lastly, if it’s a class where water is not  
permitted, just make sure that you feel that it’s a healthy practice  
for you and talk one-on-one with your teacher if you have any doubts.
STEP 3: 
 Drink water and only water. For hydration, you’ll want to reduce or  
eliminate all the caffeinated and flavored beverages from your diet  
including coffee, dark teas, and sodas. Non-caffeinated, herbal teas  
are fine, but for the most part, you want to drink just plain old  
water.
But what kind of water? Dozens of athletic studies 
have shown  that it’s not just about quantity, it’s also about quality 
when  it comes to water. What you’re looking for are electrolytes, 
positively  and negatively charged ions from minerals that keep your 
body’s  electrical  system working properly.
In a natural 
state, we’d drink our  water from streams, wells, and rivers. This water
 is high in minerals,  including the important electrolytes sodium, 
potassium, calcium,  magnesium,  and chloride. But since most of our 
water today has been treated,  heavily  filtered, and bottled, it’s 
often referred to as “dead” water  because it’s mineral-deficient.
RE-MINERALIZE YOUR BODY & YOUR  WATER
Natural mineral 
water is very hard  to come by, and not practical for most people 
(unless you live near  mineral springs); so the best idea for most 
students is to proactively  re-mineralize their body and their water on 
an on-going basis.
There are a number of ways to boost your mineral intake, but the 
easiest   are (a) to start eating as many dark green, mineral-dense 
veggies as  possible, and (b) to consider adding a pinch of sea salt or 
seaweed  (such as dulse) to your water bottles throughout the day. 
Unbleached, 
chunky sea salt is a great  source for electrolytes and can easily be 
added to your water. It’s  high in sodium, of course, so do add just a 
pinch and be cautious if  you have blood pressure problems.
Dulse is a mineral-dense sea vegetable that is a great source for  
natural  electrolytes as well. Adding a leaf of dulse to a water bottle 
is  another  simple way to increase the “sticking” power of your water. 
If you’ve ever 
had the feeling that  no matter how much water you drink, you still feel
 completely parched;  chances are good that you were suffering from 
electrolyte deficiency.  The good news is that with a little planning 
and consciousness effort,  you can dramatically increase your body’s 
ability to absorb and retain  water. 
