the.com/weightlessness
the body's vacation from gravity, where your spine grows and your heart shrinks in protest
tallerAstronauts gain up to two inches in orbit
not zero gIt's actually constant freefall, not absent gravity
weak heartHearts shrink without gravity to pump against
puffy facesFluids float upward, swelling astronauts' heads
vomit cometPlanes simulate it via stomach-churning parabolic dives