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、肌肉丰满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，摆出一副一副自信的样子，摆出一副哑铃的样子