I can’t promise you a miracle in a week, but if you are failing by 10 points or less in the push-ups or sit-ups category or need to drop 40 seconds or less on your run time, there is hope. So, sticking with the premise you are failing just one event, here is a solution: one, only perform just above passing for the other events (2 extra for push-ups and/or sit-ups) to conserve energy for your weak event should help with 2-5 points; two, learn how to breathe properly when performing your exercises should help with 3-5 points; three, take advantage of rest positions while exercising before you get tired and follow a sustainable pattern when performing the exercises from that point on should help with 2-5 points; four, ensure you are performing the exercises properly as proper form will improve performance and reduce the chance of injury helping with 1-8 points; and five, rest and stretch for the full time limit between test events which should help with 1-4 points. For very clear explanations and pictures on how to perform points 2-5 above, get my book MAX Out the Army, Navy, Marine, and Air Force Physical Fitness and Combat Fitness Tests.