Working like the tense - flex principles of muscles in human limbs, the lamp is perfectly balanced so it remains stable as you move the arm. (idealhome.co.uk)
To keep your kitten from confusing human limbs with toys, don't use your hands and feet when you play with her. (bluebuffalo.com)
He points out that elephant legs can bend almost as much as human limbs can. (sciencenewsforstudents.org)