The Earth is big enough to make its own gravity, so we get stuckto it when we are born. The Sun's gravity pulls on the Earth, butEarth is in a stable orbit, so it goes around the sun instead offalling into it. Neither the Earth's gravity or the Sun's gravitypulls on us so hard that we can't move or do normal things. TheMoon's gravity also pulls on the Earth, but it is less strong, soit doesn't pull us up... it only creates the tides, affecting thewater.