Title: Core workouts
Subjects: Exercise, Juvenile literature, Physical fitness, Cardiovascular fitness, Health aspects, Physiological aspects, Psychological aspects, Sports, Weight training for children, Physical fitness for children, Bodybuilding, Physical education and training, Nutrition, Dietary supplements, Hatha yoga, Yoga, Pilates method, Step aerobics, Aerobic dancing, Condition cardiovasculaire, Ouvrages pour la jeunesse, Physical education, Weight training, Musculation pour enfants, Condition physique des enfants, Culturisme, Weight lifting, Exercice, Aspect physiologique