We all know the pictures of the astronauts on the ISS floating around. We also suspect that a lack of gravity is bad for the body as the muscles go weak and such.
Why don’t spaceships just rotate to cause the effect of artificial gravity through centrifugal forces?


Not really, magnets only really pull when they are close enough and would only really fake gravity in helping you maintain one orientation, that could be easier to achieve with velcro shoe soles.