Planet Heldon D - 3 Feet Tall
I don't know how long I have been here, I can only mark the passing of time by my diminishing height. Based on the others, at three feet tall it's essentially over for me. Soon the compression will progress to the point where my internal organs are crushed and the planet will finally be victorious over the last of its inhabitants.
This is no sure thing, but I know I cannot stay here. My muscles, mangled by stretches and compressions, are too weak to achieve any kind of jump, so I awkwardly tumble forward into the bottomless pit.