1: Body 2: Physical activity 3: Muscular Endurance 4: Exercise 5: Muscular Strength 6: Metabolism 7: Endurance 8: Strength 9: Fitness 10: Body Composition 11: Balance 12: Supplement 13: Weight 14: Energy 15: Muscle 16: Pose 17: Flexibility 18: Training 19: Heart 20: Calorie (As of 12:18)
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Ball-and-socket joint refers to one kind of triaxial joint to provide 3-degree-of-freedom motions
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