Ключевые слова: abdominal, abdominal muscle, abs, adult, aerobics, athlete, bicep, biceps, body building, body building exercises, body conscious, bodybuilder, bodybuilding, caucasian, dark, dramatic lighting, fit, flexing muscles, gym, health and fitness, health club, healthy eating, healthy lifestyle, human muscle, indoors, lifestyles, low key, male, man, men, muscular build, sport, sports and fitness, sports clothing, sports training, strength, strong, symmetry, the human body, triceps, waist, weight training, young man,