By Mayo Clinic Staff. An X-ray is a quick, painless test that produces images of the structures inside your body â particularly your bones. X-ray beams pass through your body, and they are absorbed in different amounts depending on the density of the material they pass through.
Physical Causes. The most obvious reason for being tired and sleepy is lack of sleep. According to MayoClinic.com, the average adult needs between seven and eight hours of sleep every day. If you're sleeping less than that, adjusting your sleeping schedule might provide some relief.
Other words that are sometimes used in place of fatigue include exhaustion, weariness, and lethargy. According to the National Institutes of Health, feeling fatigued is not the same different from just feeling drowsy or sleepy. (NIH) When you are fatigued, you have no motivation and no energy. Being sleepy may be a symptom of fatigue, but it is not the same thing. The organization also states that fatigue is a very common symptom for a number of medical conditionsâboth serious and non-seriousâand also a natural result of some lifestyle choices. If your fatigue has no apparent cause, and it not going away with proper rest and nutrition, you should see your doctor.