Staying hydrated is critical for feeling good and operating at your best. Given that the body is made up of an average of 60% water, it requires H2O to function on numerous levels. You need more than two hands to count the number of awesome things water does within your body, but some of its main jobs include removing waste and toxins, regulating body temperature, lubricating joints, and improving cellular, tissue, and organ health, says Tamika Henry, MD, MBA. Other tasks include aiding in saliva production, proper digestion, and the delivery of oxygen throughout your body.
While thirst is the most common signal of dehydration, there are several other, less-obvious ways to tell if you’re water-deprived, including some mental and emotional markers that may surprise you.