I have read quite a few threads that mention how important it is to stay well hydrated when vaping.
Over the years I have done a couple of things that have forced me to define that phrase "well hydrated".
Until a few years ago I competed in 24 hour mountain bike events. Since those are typically at high altitude (a major cause of dehydration) and the length of the event essentially depleting any hydration that one had before starting, I found I needed a way to stay hydrated, or suffer the consequences; altitude sickness via dehydration. The other thing I did that depleted my "well hydrated" condition was Bikram Yoga for a year. That's strenuous exercise for 90 minutes in a 105 degree room.
I found out that:
DRINK WATER
AND VAPE ON 
Over the years I have done a couple of things that have forced me to define that phrase "well hydrated".
Until a few years ago I competed in 24 hour mountain bike events. Since those are typically at high altitude (a major cause of dehydration) and the length of the event essentially depleting any hydration that one had before starting, I found I needed a way to stay hydrated, or suffer the consequences; altitude sickness via dehydration. The other thing I did that depleted my "well hydrated" condition was Bikram Yoga for a year. That's strenuous exercise for 90 minutes in a 105 degree room.
I found out that:
- Drinking one half of your bodies weight (lbs) in ounces of water over the course of a day, for 2-3 days, is one of the best ways to replenish it's hydration level. So, if you weigh 150lbs, then 75 ounces of water each day, for 2-3 days can do the trick.
- We all should normally try and drink 8 eight ounce glasses of water a day - 64 fluid ounces of water. Of course few of us do that, so we are not well hydrated to begin with.
- If your urine is yellow, you are probably dehydrated to some degree. Of course taking multi-vitamins can cause yellow urine as well, but not for the entire day. Drink enough water to clear up the yellow, before the vitamins.
- Nothing is better than water for hydrating the body. Not Gatorade, or coconut water, or electrolyte drinks. Of course they can help in the midst of dehydration, but maintaining a hydrated body is best achieved with good old H2O.
- Once you "feel" thirsty you are already experiencing the onset of some dehydration. Don't wait until you are thirsty. Drink water even when do not feel like you need it. I carry around a liter of water every where I go. Sip it as often as I think about it.
- The body absorbs water slowly, about 3 ounces per hour. Except when we are sweating, exerting ourselves or depleting through higher altitudes, or in our case, vaping. Then the body will absorb quicker. So, drink lots of water while you are vaping.
- The body holds water in our joints when we do not give it enough water. So, when we first begin putting a healthy amount in it, we will need to pee a lot. This only lasts until the body realizes it is getting enough water and does not need to "store" it up.
- Over a week or two the bladder will become stronger as it is expected to hold more fluid, and the need to empty it frequently will lessen. Even through the night.
- The body needs to be well hydrated to detox us and flush itself clean. And, us ex-smokers need that.
- Lastly, nicotine, like caffeine, stimulates the body to want to flush the nicotine out and causes even more loss of hydration.
DRINK WATER

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