boy in a green sports jersey boxing a black heavy bag in a gym

boy in a green sports jersey boxing a black heavy bag in a gym. He is wearing boxing gloves and being instructed by a man also wearing boxing gloves. Other people are exercising in the background, including a man doing dumbbell exercises and a woman doing crunches on a large blue exercise ball. Other exercise equipment like kettlebells, medicine balls, and resistance bands are also visible in the background. The gym has gray flooring and a high ceiling with exposed ducts and a ceiling fan. The boxing bag is suspended from a yellow metal frame. Another heavy bag is visible to the left.