Poljanski legs after the 16 stage of Tour de France. High blood volume, low body fat make these veins so prominent.
Lord Wiggins can teach you something about the heart... and about working hard.
Click on image to open article from the BBC on Bradley Wiggins
Go to the links in the article to help you cement your knowledge about the cardiac system and investigate other sites to help answer the questions about other athletes/ impacts of athletics on the circulatory system.
Hincapie showing varicose vein primarily due to hours on bicycle training for Tour