Ключевые слова: adult, alone, athlete, black, black man, body, break, challenge, digital, exercise, fit, fitness, free, health, healthy, heart, heart rate, life, lifestyle, male, man, marathon, modern, monitor, nature, outdoor, outdoors, park, people, person, progress, run, runner, running, smart, smart watch, sport, sports, steps, stopwatch, tech, technology, time, training, urban, watch, wellness, work, workout, young,