The idea that every person has a tidy 206 bones is sort of a misconception. For one thing, it only applies to adults. Babies are born with somewhere in the range of 270 to 300 bones, some of which are made completely of cartilage. As a baby grows, a bunch of bones fuse together and calcify, decreasing their total bone count. Infants, for example, typically have 33 vertebrae, compared to 24 for adults. Then there's those people who have extra, like a bonus vertebra, the L6, at the base of the lumbar region of their spine. Others have additional sesamoid bones: pea-shaped protrusions in the muscles or tendons near your foot, hand, and wrist joints. Most people have 24 ribs — 12 on each side — but it's not uncommon for someone to have one or two more than that. These cervical ribs are located above the rest of the ribs. In short, 206 is the most common answer to the question, but not the only answer.