Boost energy, lose fat, build muscle, and improve your performance with the best-selling nutrition guide for active people! In Nancy Clark’s Sports Nutrition Guidebook, you’ll get real-world advice from an internationally respected and trusted sports nutritionist. You’ll find the latest research and information on what to eat before, during, and after exercise; sport drinks and energy foods; popular trends like keto and gluten-free diets; when and how much carbohydrate to eat