Ключевые слова: adult, african, american, app, bad, body, caucasian, cheerful, communication, concept, connection, device, earphones, exercise, fit, fitness, gym, hand, happy, headphones, healthy, holding, human, internet, joy, leisure, lifestyle, listen, man, message, mobile, modern, music, people, person, phone, positive, smartphone, smile, sms, sport, technology, telephone, texting, tracker, training, using, woman, workout, young,