Ключевые слова: abdominal, active, adult, athlete, athletic, background, body, build, caucasian, core, exercise, fit, fitness, flexing, floor, gym, health, healthy, home, horizontal, human, indian, lifestyle, male, man, mat, men, muscle, muscles, muscular, one, people, person, plank, push, pushups, room, sport, sportive, sports, sportswear, sporty, straightarm, strength, strong, training, ups, workout, young,