It is difficult to give a specific amount of time that is required to get in shape, as it depends on various factors such as your current fitness level, your goals, and the type of exercise that you are doing. However, it is generally recommended to aim for at least 150 minutes of moderate-intensity aerobic exercise or 75 minutes of vigorous-intensity aerobic exercise per week, according to the Centers for Disease Control and Prevention (CDC). This can be spread out over several days, such as 30 minutes per day, 5 days per week. In addition to aerobic exercise, it is also important to incorporate strength training exercises at least two days per week to help build and maintain muscle mass. It is also important to listen to your body and not push yourself too hard, as this can lead to injury or burnout. It is always a good idea to speak with a healthcare professional or a certified personal trainer before starting a new exercise program.