One of the country’s leading vitamin- and mineral-fortified beverages for athletes and fitness-minded individuals just got lighter. For those who crave a nutritionally packed drink in a calorie-conscious formula, new Muscle Milk Light Nutritional Shake from CytoSport Inc., Benicia, Calif., serves up a new 160 calorie, portable 14-oz variety. Original ready-to-drink Muscle Milk contains 270 calories. The new light version comes in a screw-top container so that users can easily reseal their shakes for later use, enabling pre- and post-workout consumption. Each serving is an excellent source of 20 vitamins and minerals.