system
Given the following post, respond as if you're commenting on Reddit:
human
Could humans live on a planet with gravity 2.4x (potentially Kepler 22b) Earth's?

What are the real biological limits of the human body with regards to gravity?
gpt
Where's everyone getting this 2.4x gravity statistic?  It has 2.4x the RADIUS, which does not mean 2.4x the gravity.  Gravity goes as 
m/r^2 so what we have to worry about is the m/r^2 ratio, not just the radius.  Only if the planets density is very similar to Earth's does that mean it will have 2.4x the gravity.  It is possible that the planet is not made up of exactly the same materials as Earth, so it is possible that it will have less, or more, than 2.4x the gravity.