Fingernails grow from the matrix. The nails are composed largely of keratin, a hardened protein. As new cells grow in the matrix, the older cells are pushed out, compacted and take on the familiar flattened, hardened form of the fingernail.. :3
To maximize the storage of glycogen (or energy) in the muscles and liver.
If having long-term anxiety is can can caused your brain to release stress hormones more likely causing you to have headaches, feeling dizzy or even depression.
Moderate kidney disease would be the answer you are looking for
