One concept that I would like to ponder on are the joints. The joints in our body allows our bones to grow and they also make our body move. I specifically chose this concept because I am really interested in sports, especially basketball and football. In those sports, injuries are very common and most of the time injuries are concerning the joints. I can also use this concept if I would experience pains in my body or for example I hyperextended my shoulder which would immediately concern my shoulders which contains ball and socket joints.