Pistachios are a great snack chock-full of vitamins and nutrients including antioxidants, beta carotene, fiber, glutamine, potassium, phytosterols, zeaxanthin and B6. ???You really can???t go wrong with pistachios,??? says director of sports nutrition at the University of Southern California, Becci Twombley. ???With six grams of protein in every 160-calorie serving, pistachios are a protein front-