Ключевые слова: activity, adult, ages, background, body, cardio, cardiovascular, care, caucasian, center, class, club, concept, couple, different, elderly, equipment, exercise, female, fit, fitness, group, gym, health healthy, leisure, lifestyle, male, man, mature, old, pension pensioner, people, platform, recreation, retired, senior, shaping, sport, sporting, sports, step stepper, stretch, teamwork, train, training, warm up, weight loss, woman, workout, young,