Clinical pathology supports the diagnosis of disease using laboratory testing of blood and other bodily fluids, tissues, and microscopic evaluation of individual cells.
Make it better: To help avoid aches in this face-up position, place a pillow or rolled-up towel under your knees. It supports the natural curve of your spine and can lower your chances of back pain. If you're snoring or have sleep apnea, it's best to sleep on your side.
Again, your skin needs to breath to promote and speed the healing process. So, if you get a tattoo on your back, you need to sleep on your belly for a few days or visa-a-versa. If you can sleep with your tattoo exposed, that would be best. If not, you can place a clean thin towel between you and the sheets.