Ключевые слова: 30s, abdominal muscle, adult, adults only, arm, athlete, attractive male, bicep, body building, body care, body conscious, caucasian ethnicity, chest, clenching, confidence, fist, flexing muscles, front view, healthy lifestyle, horizontal, indoors, lifestyles, macho, male, male beauty, man, masculinity, mid adult, mid adult men, muscular build, one man only, one mid adult man only, one person, only men, pectoral muscle, people, portrait, power, pride, shirtless, standing, strength, the human body, waist up, weight training, wellbeing,