The abyssal plains of the ocean are some of the deepest parts. The abyssal plains are very level, very large areas of the ocean floor that stretch from the continental rise to the mid-ocean ridges....
Atoms' nuclei contain protons and neutrons, and are surrounded by an electron cloud in which reside (of course) electrons. These subatomic particles are made out of quarks.
If your neck is stiff you probly sleep on your stomach. Try sleeping on your side or back to help. Cracking your neck also contributes to the stiffness..