Ключевые слова: abdominal muscle, abs, adult, athlete, beautiful, beauty, beauty and health, body building, caucasian, cheerful, confidence, exercising, flexing muscles, floor, gym, hands behind head, happiness, health club, healthy lifestyle, human muscle, indoors, lifestyles, lying down, men, muscular build, one man only, physical education, posing, relaxation exercise, situps, smiling, sports and fitness, sports training, strength, vitality,