Serious, adult, fit muscular caucasian man coach posing for a photoshoot in a dark studio, wearing sportswear, showing his muscles with dumbbells 强壮、强壮、健壮、健壮的高加索男子教练身着灰色运动服，站在聚光灯下的黑暗工作室里拍照，展示自己的肌肉，摆出一副快乐的哑铃