Ключевые слова: active, athlete, athletic, back, ballet, body, boy, calf, calves, child, development, energy, feet, floor, foot, growth, gymnast, hard, health, healthy, hip, kid, leg, legs, little, muscle, muscular, on, one, pants, parquet, part, person, physiology, pumping, shorts, showing, skin, small, sport, strain, strength, strong, tension, thigh, tiptoe, training, underpants, underwear, workout,