Answer Wiki. The system would be cued off the pilot's helmet, so it will definitely look where your head is pointing, not your eyes specifically (that would be a gaze-tracking system, which AFAIK hasn't yet been used for this kind of application).
Exercise to Gain Leg Weight. Although you can't make your body gain weight in your legs, you can perform exercises that encourage the growth of leg muscle. Squats, lunges and step-ups are examples of such moves that target the legs and recruit a lot of muscle fibers for growth.
Use our weight gain calculator to find out how many calories you need to gain weight and pack on some mass. You will also find out how many grams of carbohydrates, protein and fat you need to add extra weight to your physique. If you want to gain weight, you absolutely have to consume more calories than you burn. Remember, you need to eat big to get big. One pound of body weight is equal to 3,500 calories, so eating an extra 500 calories per day will cause you to gain one pound per week. Along with increasing your calories to gain weight, you should also increase your level of exercise in order to increase lean muscle mass.