There are two general causes of poor blood vessels: First, in people with uncontrolled diet and little physical exercise, subcutaneous fat will gradually thicken, gradually hiding the blood vessels and causing them to be poorly found. Secondly, when the body does not exercise, the demand for blood decreases, resulting in atrophy of the arteries and the corresponding reflux veins, so the blood vessels become thinner and harder to find. In order to prevent the situation of poorly found blood vessels, it is recommended to maintain a standard weight and to carry out active physical exercise or physical labor in order to expand the blood vessels and reduce the blockage of fat, so that the blood vessels become well found.