Ключевые слова: activity, athletes, athletic, cardio, caucasian, control, equipment, european, exercise, exercising, fit, fitness, fitness tracker, gym, handsome, indoors, inscription, instruct, instructor, lettering, letters, man, personal trainer, profession, professional occupation, run, running, selective focus, smart watch, smartwatch, sport, sporting, sportive, sports center, sportsman, sportswear, sportswoman, sporty, supervise, text, trainer, training, treadmill, two people, wearable technology, woman, working out, workout, young adult,