New research shows the "average" human could survive long-term on an exoplanet with around 3.5 times Earth's gravity. According to the authors, Hafþór Júlíus Björnsson ("The Mountain") could take a few steps on a planet with 4.6 times our gravity.
http://www.astronomy.com/news/2018/09/gravity-to-the-max
https://redd.it/9hiha8
@r_space
http://www.astronomy.com/news/2018/09/gravity-to-the-max
https://redd.it/9hiha8
@r_space