A man is performing a decline barbell triceps extension, also known as a skullcrusher, in a gym located in Saint Petersburg, Russia. He is lying on his back on a white-framed decline weight bench with red padded sections, holding a barbell with an overhand grip. The barbell has dark weight plates with red markings on each side. The man, wearing a black short-sleeved top and dark pants, lowers the barbell towards his head by bending his elbows, then extends his arms to complete the repetition. He has short hair pulled back into a small bun or ponytail and an earring in his left ear. The gym environment features a black interlocking rubber mat floor and a brick-patterned wall in the background. Large mirrors on the wall reflect other gym equipment. Various other pieces of workout equipment, including benches with red and blue padding, and weight racks, are visible in the periphery. The word "CUBEX" is visible on the lower frame of the decline bench. The lighting is consistent with an indoor facility, and the man appears focused on his exercise.