It's like related to: Your pulse. If you are a relatively thin man, you may very well just be seeing the pulse wave from your heart contractions through your aorta - the biggest blood vessel that runs from your heart all the way down to about your belly button(umbilicus).
Answered 9/9/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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