The Cardiovascular System is the system that transports blood,nutrients,oxygen, and waste.The way the system is affected in space is the blood (etc.) won't be able to go towards other places in the body in which it has to go to.How our Space suit will help fix this is because of the spacesuit in which it will be computerized,which will make the suit heavier so there is more pressure in the body(while you are doing some excercises) to make your blood(etc.) move to where it needs to.