Sandstone: Rock for Crack Climbing. Sandstone is a sedimentary rock, a rock type that encompasses a wide variety of characteristics and is deposited directly on the earthâs surface. Roughly 75% of the earthâs land surface is covered with some type of sedimentary rock. Sedimentary rocks like sandstone form when minute rock particles, often from granite, are deposited by wind and water on earth surfaces.
8. 1  Other Causes. 2  Diabetes causes arms or hands and feet to fall asleep even when one is awake and relaxed. 3  Hand surgery and arthritis damage or irritate the nerves.
There are a variety of reasons why people with MS have difficulty falling asleep and staying asleep. These include: Initial Insomnia: Difficulty falling asleep at night. MS-related neuropathic or musculoskeletal pain and the anxiety it causes may make it difficult to fall asleep.