A portrait of a strong, muscular man with a serious and determined expression. His skin is tanned and well-defined, with visible veins on his arms and neck. He has intense dark brown eyes full of focus and determination. He sports a short, well-groomed beard that highlights his strong jawline. His short, slightly tousled dark brown hair adds a natural touch. He wears a tight-fitting dark-colored shirt that highlights his defined muscles. The lighting is dramatic, with soft shadows that accentuate the musculature and skin details. The colors are desaturated and the contrast is low, creating an atmosphere of strength and determination.