Kengoro and Kenshiro have rib cages, flexible spines as well as synthetic ligaments and joints
Japanese engineers have now turned to the human body for inspiration for a pair of robots capable of performing a range of life-like movements.  These experts recreated the intricacies of the skeleton and its surrounding tissue.
This has resulted in machines that sweat while doing push ups, playing badminton and other complicated motions in a less mechanical manner than most automatons.

Researchers at the University of Tokyo constructed two models of the humanoids, called Kengoro and Kenshiro, recreating the entire musculoskeletal system.
They employed aluminium, steel and plastic as a frame, and designed synthetic joints and ligaments to enable the robots to move.

Kengoro and Kenshiro have rib cages and flexible spines, as well as an artificial central nervous system that monitors balance and stability.
The pair are also equipped with high tech processing power to give them the ability to act and react independently.

The pair have rib cages and flexible spines, as well as an artificial central nervous system that monitors balance and stability