Ключевые слова: african, afro, application, athlete, athletic, cellphone, class, club, cyberspace, elderly, exercise, exercising, fit, fitness, gadget, gym, indoor, internet, jogger, jogging, listen, listening, message, mobile phone, muscle, music, online, recreation, relax, rest, resting, run, runner, running, screen, slim, smart, smile, sportswear, strength, trainer, training, using, watch, weight, wellness, wireless, workout, yoga, youth,