If you are feeling a pain in the flanks, in the lower back portion under the rib cages, you may be suffering from kidney pain. It is important for you to pinpoint the location of your pain. You may just be mistaking the pain from a ligament sprain or a muscle pull injury as pain in kidney. Picture 1: Image showing location of kidney inside human body. Source: Wikipedia.
The stringer is one of the central areas of surfboard design to which the shaping community is paying increased attention. While it has always been commonplace to see wooden stringers running down the center of a foam blank, shapers have reevaluated the stringerâs function to further advance the sport. When Clark Foam ceased operations in December 2005 it signaled the beginning of a revolution in surfboard design and technology.
The stringer is a piece of wood that is in the middle of the surfboard. It's placed there for strength and can give the board some flex characteristics, in polyester resin fiberglass boards they were common but some companies are making surfboards without stringers now, the epoxy construction techniques make stronger and lighter boards.