Relevant concepts of physical activity-exercise, health, fitness, types of sports, physical activity guidelines in terms of frequency intensity, type and duration of exercise? Bioenergies-Fuel utilization by working muscles and fuel shiftsBody weight and Body composition variations in athletes of various categories and impact on sports performance Role of macronutrients (carbohydrates, fats and proteins) and micronutrients in exercise, altered nutrient needs and recommended allowances for athletes Important of fluids and electrolytes, suitable hydration strategies for sportsperson Essentials of diet planning for sportsperson including concepts of physical fitness components of sports, phases of training, dietary practices, body weight and body composition, biochemical parameters, and nutrition periodization Practical nutrition guidelines, inclusion of nutritional supplements in the diets of sport persons-endurance, power/ strength, team events, racket sports, weight class and combat sports; explanation with the help of well-designed sample case studiesNutritional supplements-detailed review on the classification, composition, dose, effects, efficacy, and safetyA nutrition spotlight that highlights current concepts; key terms; recent researchers; and study questions in every chapter