2. Clench your hand into a fist.
For this test, make a fist and hold your hand in the same position. After 30 seconds, open your fist and you will notice that your palm has turned white. When you make a fist, your blood vessels get squeezed, restricting the blood flow to your hand.
If after you free your hand, the blood comes rushing back, it means your blood vessels are working just fine and you are healthy. On the other hand, if it takes a while for the palm to turn back to its usual red again, it can be a sign of arteriosclerosis.
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