Throughout my experimental designed research, Adult Firefighter’s both males and females employed at Mountain View Fire & Rescue Fire station in King County, Washington will be given an informed consent form to be filled out before participation in the experiment. A survey will then be filled out before consuming one of three energy drink brands (Monster energy, Bang energy, and rockstar energy) resulted in the best overall energy level. All data recorded will be qualitative data in which is perceived by each individual FF (firefighter) whose identity will be kept anonymous in the final data set. My survey will be a mixed-method design containing both qualitative and quantitative questions. After filling out the survey, firefighters will be provided one of three drinks, and record how they feel after the end of their shift using a similar survey. All participation is 100% voluntary, and participants are free to withdraw from the experiment at any point with no repercussions. My hypothesis is; if FF’s are given 3 different types of ED’s (energy drinks) with different amounts of caffeine, then which brand will produce the greatest results? Addressing the issue of volunteering for this experiment, compensation for volunteering will be a provision of free energy drinks with a variety of flavors. I will be emailing the fire chief and talking to one of the lieutenants of East Pierce Fire & Rescue in hopes of their willingness to participate in my study. The FDA guidelines for caffeine states that “For healthy adults, the FDA has cited 400 milligrams a day.” which is considerably below all energy drink brands that have been selected for the study. In order to maintain this regulation, FF’s will be provided one ED per day. The primary purpose of this study is to narrow the selection of ED brands used by FF’s based on perceived performance.