Question

Explain how circulation is affected by space travel

Answer 1

Because there is no gravity in space circulation should slow down or stop
make all of the blood float towards your head

Answer 2

On Earth, we all know gravity affects everything around us. ... There's no gravity to pull blood into the lower part of the body. Instead, blood goes to the chest and head, causing astronauts to have puffy faces and bulging blood vessels in their necks.