After the initial eight pre BALT's, to the experimental group, 160 mg of caffeine was given through one energy drink (16 ounces). Monster energy drink was chosen because, unlike other energy drink brands, the label of Monster Energy drink exhibits the guarana additive, a potential CNS stimulant, in its nutritional label. To the control group, Investigators gave a caffeine pill of 200mg, a moderate dose in healthy adults which has been used in numerous studies on different topics and has not been associated with adverse effects such as toxicity, cardiovascular effects, behavior changes, among other things. Because peak absorption of caffeine is reached within 30-45 minutes after the ingestion of caffeine/energy drink, there was a rest period of 30 minutes. Vital signs were measured after the rest period, for the third time. The same 8 BALT's were then performed, for post ingestion results.