The physical fitness of the elderly is generally poor, and the functions of organs such as the heart have declined. Therefore, it is suitable for nourishing yin and qi, enriching blood and nourishing blood. You can choose supplements containing ginseng, velvet antler and medlar, which can enhance blood circulation, reduce blood viscosity and prevent cardiovascular and cerebrovascular diseases. However, while taking supplements, we should not ignore the importance of diet. We can eat more foods rich in high-quality protein, such as animal liver, and try to eat less foods high in fat and calories.