Why You Need to Be Rehydrated, Part 2


by Rey Beltran |

Summer isn’t over yet. For sure, you’ll need more water than your usual intake. Continuing our article, here are the effects of not being properly hydrated:

Driving Coordination Disability

A recent finding published in Physiology and Behavior stated that “the number of driving errors doubled during a two-hour drive when drivers were dehydrated versus hydrated—an effect similar to driving while drunk (defined by most states as .08% blood alcohol).”

Easily Exhausted

Luga Podesta, MD, sports medicine specialist at Kerlan-Jobe Orthopaedic Clinic in Los Angeles, Calif. stated that “when you’re dehydrated your blood pressure drops, heart rate increases, blood flow to the brain slows — all of which can make you tired.”

Mood Changer

Dr. Podesta also added that “Neurological effects of dehydration can cause irritability.” In a study that tested mood and concentration in 25 young women who were either hydrated regularly or induced to dehydrate by exercising and taking diuretics, the dehydrated group reported headaches, loss of focus, and irritability.

Chilling Experience

Just like hypothermia where you chill because you feel cold, dehydration can also do that. According to Dr. Podesta, “this occurs because your body starts to limit blood flow to the skin.” So, low circulation of blood will definitely give you the chills.

Muscle Cramps

Dehydration affects your blood circulation, giving you muscle cramps. According to Ray Casciari, MD, in Orange, Calif. “the body will protect its vital organs, so it shifts fluid away from muscles and anything that’s not vital.” Losing water will also change your sodium and potassium level through sweat loss, which also contributes to cramping.


Not enough water in your body will make you literally stuck up. Water keeps things moving through the colon, so if you don’t have enough water in your body, the body compensates by withdrawing fluid from the stool. Not a nice picture there. So when that occurs, your body waste will be difficult to expel because of lack of water.

Dizziness and Fogginess

Low water means low blood circulation. This means you might experience vertigo. Your ability to take on tasks that will require thinking will also prove to be difficult since you are dehydrated. When you experience dizziness, a glass or two of water can make it go away.


Low water in the body affects the serotonin levels, which can give you headaches. Dr. Casciari added that “small blood vessels in the brain respond quickly to hydration levels (which is also behind hangover headaches), leading to dull aches and even full-blown migraines.” You would know if you’re dehydrated when you drink a glass or two of water and the headache disappear after.

Drinking eight glasses of water is advisable on a regular day. But during summer when the heat is unberable, more than eight glasses is required to keep you up and about. Rule of thumb is, as much as possible, stay rehydrated.

(parts of this article were lifted from

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