Freefall in color by many folks.
Sam: I was listening in. What's this about your head getting big?
Niomi: The human body is a tower. Our biology evolved to move fluids against gravity.
Niomi: Early astronauts called it the "puffy face, skinny legs" syndrome. Without any downward force, our fluids move upward and cause problems.
Niomi: That's why Florence was so insistent on having constant thrust for this journey. Gravity is like oil in machinery. You want enough, but if you can't have that, some is better than none.