Varicose veins are really just swollen veins and are caused by increased bloodvolume and pressure on the legs and feet.
静脉曲张其实就是肿胀的静脉，这是由腿部和脚部的血量增加和压力引起的。
2
Your body needs more of this mineral during pregnancy to keep up with your expanding bloodvolume.
你的身体为了赶上怀孕期间扩大的血液容量，需要更多的这种化学元素。
3
While you're lounging on the beach in Bermuda, your body is repairing muscle fibers, boosting bloodvolume, and building capillaries to help transport blood more efficiently.