1 The top number is called the systolic blood pressure. 2  For most people, this reading is too high if it is 140 or higher. 3  The bottom number is called the diastolic blood pressure. 4  For most people, this reading is too high if it is 90 or higher.
What causes joints to make snapping, popping noises? Q: I am a 20-year-old in okay shape and health, but the joints in my upper and lower back and shoulders are always stiff and snap all the time. Are noisy joints the sign of some problem? A: Snapping and popping of joints is common. The sound you hear is caused by air bubbles in the synovial fluid â the liquid that surrounds and lubricates your joints â and by the snapping of tightly stretched ligaments as they slide off one bony surface onto another.
I think it is also the same reason why your knuckles crack when you bend them, may be there is air inside, so whenever you move your joints, the air is forced out, causing the bones to hit each other, which cause this sound.It is only a guess, I don't exactly have a clear idea.est Answer: In the wrist there is a number of little bones that have no connective tissue. They sometimes touch and move making the click when you move your wrist in an awkward way.