Lactated Ringer's (LR) solution bolus is commonly administered in the emergency department setting to seriously ill patients. It is also common to obtain blood samples to determine serum lactate levels to aid in the assessment of the patient's degree of illness. This study endeavors to determine if serum lactate levels are affected by LR fluid administration in healthy adult individuals as compared to those who receive Normal Saline (NS). Healthy adult volunteers will be used as subjects so that the illness of hospital patients does not confound the results.