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.
Feeling sleepy and tired all the time can be a sign of fatigue. Tiredness and fatigue can manifest in a number of ways. According to eMedicineHealth, fatigue can cause weakness, dizziness, tiredness, shortness of breath and even palpitations.
1 Anxiety causes profound muscle tension all throughout the day, and often this causes a similar drained feeling that makes your body tired.  Mental Tiredness Some of that tiredness is entirely mental, simply because your brain - like a muscle - can also run out of strength. Anxiety can cause a host of rapid, stressful thoughts. When it does, your brain is incredibly active.