Ключевые слова: activity, app, application, body, cardio, cartoon, cell, contamination, control, count, covid, device, digital, epidemic, exercise, face, fitness, flu, gadget, hand, health, healthcare, healthy, lifestyle, man, mobile, monitor, old, online, people, person, phone, pollution, protection, screen, service, smart, smartphone, sport, steps, tech, technology, tracker, tracking, training, using, woman, workout, young,