Ключевые слова: 1, ab, abdominal, abs, active, activity, adult, athlete, athletic, black, body, caucasian, city, core, cross, crunch, effort, exercise, exercising, fit, fitness, health, healthy, lifestyle, male, man, motivation, muscle, muscular, outdoor, outside, person, physical exercise, runner, situp, sport, sportsman, sportswear, sporty, stomach, strength, strong, summer, to sit, training, up, working, workout, young,