Gravity

Mars has a mass of 6,419 · 10²³ kg. Compared with Earth this is only a little bit more than a tenth. This results in a lower Gravity.

The gravitational acceleration is only 3,71 m/s². The resulting weight of any body on the surface of Mars is only a bit more than a third, compared with the same body on Earth.

Impact on human beings

Yet, the long term consequences for the health of human beings is unclear. Some kind of exercise can be helpful.