Meet the Walker S2: the world’s first humanoid robot that knows when it’s tired and does something about it. Instead of collapsing on the couch with snacks like the rest of us, it casually strolls over and changes its own battery.

Built by UBTECH Robotics in China, this overachieving robo-employee never stops. It senses when it’s running low, swaps out its power pack all by itself, and gets right back to work. No complaints. No “5 more minutes.” Just pure, terrifying efficiency.

Watch it in action and prepare to feel wildly underproductive.

[Via LS]