So unless you're a giant in height (7ft or higher), you'll probably need to shed quite a bit of weight. If you're a high school student, start looking into sports and other fitness programs to get you into shape, and the weight over time will drop. If you're a college student currently at UNF looking to join AROTC there, you're going to have to show promise of weight loss for them to consider putting you on scholarship. Either way, research some different weight loss options, talk to your doctor, and good luck on your journey!