Currently, only BioBiped1 has been constructed to date, but it has managed to hop around in a rather impressive manner already. The kind of hopping ends up generating a similar level of stress as experienced by us humans when we don our running shoes and go for a light jog, so this bodes well for those who speculate that such a robot will be making its way to the treadmill sometime down the road. Each leg will feature a quartet of joints, where they will work in tandem by combining both active motors and passive springs, referencing the muscles and tendons which are found in a human leg. Now this is one robot that we hope will be able to stand on its own two legs without any external help eventually – literally.