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
8-10 hours. It helps you take in information and remember things if your brain is well rested and you don't have to force yourself to wake up.
The answer should be Both A and C
Reading clears the mind making it ready for sleep and post-exercise drops the body temperature making it want to sleep
