Ключевые слова: 20s, 30s, 40s, 50s, active, caucasian, class, exercise, exercising, female, fifties, fitness, forties, group, gym, gym members, happy, healthy, horizontal, indoors, keep fit, keeping fit, looking at camera, male, man, mature, men, mid age, middle aged, mirror, mixed age group, nine people, people, portrait, reflection, smiling, standing, thirties, together, training, twenties, waist up, woman, women, working out,