Physiological effects aboard the ISS range from muscle atrophy to osteoporosis and negative effects on the balance and cardiovascular system. With these mitigated for to some extent, such signs of the body adjusting to daily life without gravity are in synchrony with those likely to be experienced on a journey to Mars.
http://www.spacesafetymagazine.com/space-exploration/mars-mission/earthlings-martians-living-red-planet-affect-human-bodies/
It's called compression fatigue: the more we run, the more weight we lift, the more our bodies pay the toll from gravity. Spine. Perhaps, the most noticeable effect of gravity on the body is compression of the spine. Our spine consists of vertebrae and sponge-like discs. The downward force of gravity causes the discs to lose moisture throughout the day, resulting in a daily height loss of up to 1/2 - 3/4!
http://www.evolutionhealth.com/Inversion_Therapy/Gravity_Inversion.html
Likewise, Earth exerts a stronger pull than the moon because it is larger, so there is more pull on our bodies here on the Earth than we would feel on the moon if we were astronauts visiting there. We don't actually feel gravity. We only feel the effects of trying to overcome it by jumping or falling.
http://idahoptv.org/sciencetrek/topics/gravity/facts.cfm
Quora User. It definitely affects us and it does in a big way. It is the reason why the earth, and along with the earth we too, goes/go round the sun. They way gravity works is that the acceleration caused due to the gravitational field is independent of the mass that is accelerating.
https://www.quora.com/Does-the-suns-gravity-affect-us
No Conclusion. The force of gravity affects all bodies in the universe. How well each human falls into the imaginary line of gravity determines the energy they must have to expel to live within this force. The ideal axis for obtaining the greatest balance is one that is a strait line through the center mass of the body.
http://www.123helpme.com/physics-of-the-human-body-in-earths-gravitational-field-view.asp?id=153500
In order to assess the physiological effects of living on the surface of Mars, the Martian environment must be considered. Although it is orbiting 50% further away from the Sun and is 11% smaller than Earth, Mars is remarkably similar to our blue marble.
http://www.spacesafetymagazine.com/space-exploration/mars-mission/earthlings-martians-living-red-planet-affect-human-bodies/
It's called compression fatigue: the more we run, the more weight we lift, the more our bodies pay the toll from gravity. Perhaps, the most noticeable effect of gravity on the body is compression of the spine. Our spine consists of vertebrae and sponge-like discs.
http://www.evolutionhealth.com/Inversion_Therapy/Gravity_Inversion.html
And now the point: I mean, the earth's gravity pulls us to it, while we pull the earth to us (but in a very small way). So if the sun's gravity pulls each planet to it, does it make sense to think that in some way the sun is pulling us to it too?
https://www.quora.com/Does-the-suns-gravity-affect-us
Even our own bodies have gravity. The Earth's gravity is far stronger than our own so we don't notice the gravity our bodies possess. Gravity is affected by the size and proximity of objects. The Earth and the moon have a stronger pull on each other than the Earth and, say . . . , Jupiter because the Earth and moon are closer to one another.
http://idahoptv.org/sciencetrek/topics/gravity/facts.cfm
The surface gravity of Mars is 38% that of Earth. That might make it slightly easier on landing, but in the long run, the full force of gravity that our bodies have adapted to will not be present to re-strengthen the astronauts’ cells, bones, and muscles as they readapt to a gravity environment.
http://www.spacesafetymagazine.com/space-exploration/mars-mission/earthlings-martians-living-red-planet-affect-human-bodies/
how gravity affects our bodies on earth
Gravity is affected by the size and proximity of objects. Gravity is affected by the size and proximity of objects on earth.  Gravity is affected by the size and proximity of objects on Earth.