Ключевые слова: adult, athlete, athletic, beach, exercise, fit, fitness, health, holding, injured, injuries, injury, jogger, jogging, joint, knee, knees, leg, legs, ligament, man, medical, men, muscle, muscles, muscular, out, outdoors, pain, painful, park, people, person, physical, problems, river, run, runner, running, rupture, sore, sport, strain, training, triathlon, working, workout, young,