It's not exactly like a body. Its weight distribution is different,
unless you happen to be of uniform density. Also, it can't make tiny
instantaneous corrections to its posture to stabilize it. Here's an
experiment for you to do: Go find a body that has entered rigor mortis
and see if you can stand it upright.
> Suppose there is human statue of cement in standing position. We human
> being can remain in standing position. But why can't this statue remain
> standing even if it is exact like our body?