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.
Poor Sleep Habits. A woman yawns over coffee due to being sleepy from poor sleep habits. Tetra Images - Jamie Grill/Brand X Pictures/Getty Images. The most common cause of always feeling too sleepy or drowsy during the daytime might be the most obvious: you are simply not getting enough sleep at night.