A lot of meal replacement bars really don't go far enough for some athletes, especially larger athletes training hard. Their protein, carb, fat and calorie needs are substantially higher than the average user, so the average nutrition bar just won't cut it for these users; they'll eat a bar - doesn't matter which one - and still be hungry. If this sounds like you, or if you've been looking for a high-protein nutrition bar with more nutritional horsepower than lowcarb protein diet bars, Met-RX had you in mind when they formulated their Big 100 bars. With over 400 quality calories and plenty of everything, there's finally a bar that can keep up with you.