Dehydration
Drinking water is essential to replace the fluids (sweat and urine) released in the body. Not drinking enough water leads to dehydrating, causing blood pressure to drop. Because the brain is not getting the oxygen it needs when dehydrated, a person may feel dizzy. Overheating is one of the major causes of dehydration.
The body sweats too much during hot weather, and drinking plenty of water compensates for fluid loss. Dehydration symptoms include dark urine, thirstiness, and tiredness. Aside from drinking water, dehydration can be avoided by limiting soda, tea, and coffee consumption.
