Ключевые слова: athlete, athletic, autumn, body, boy, brother, cardio, child, children, effort, fit, fitness, forest, friendship, girl, jog, jogging, joy, kid, lifestyle, line, movement, outdoor, park, person, playful, preadolescent, public park, run, running, school, setra, sibling, sidewalk, slim, smile, speed, sports, summer, teen, teenagers, together, track, training, treadmill, twins, two, vitality, workout, young,