Cervical spondylosis, also known as degenerative osteoarthritis, cervical spondylitis affects the joints and bones of the neck, which can cause pain and stiffness. 4. Sleep. Take enough sleep. This is the natural way to increase libido. Low libido often is a result of inadequate sleep. Your adrenal glands may be really starred and need some rest. One of the differences that is noticeable in a very comparison of viruses and bacteria could be the height and width of the microorganism. Viruses less complicated smaller than bacteria. A typical virus is between 20 and 400 nanometers, while a bacterium can be as large as 1000 nanometers. The smallest bacteria are generally visible having a light microscope, while viruses require an electron microscope for observation.