Hup,hup,hup

A man in a grey and black long-sleeved shirt and black pants performs a series of fluid, rhythmic movements on a blue mat inside a gym, shifting his weight and moving his arms in a controlled, dance-like sequence. He steps side to side, alternates between a low crouch and a more upright stance, and executes a series of arm motions that resemble punches or blocks, all within a confined space with beige walls and a visible ventilation duct.