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.
WORKS: ABS, BACK, LEGS, ARMS. 1. Start in a push-up position, hands flat on the floor and below your shoulders, legs extended behind you. Your body should be straight. 2. Bend your right leg and bring it in toward your chest, then straighten it and return to starting position. Repeat with your left leg. Alternating legs, slowly do as many as you can for 60 seconds, making sure to keep your hips and butt low.