Isn't what you are doing to not "slide away" an alignment? If there are no stresses on the body, where is the force from something pushing on the body going? Shouldn't there be a stress at least at the point of impact? Where is the incoming force going?
When you're standing on a frictionless surface, the effect of the push is that your body accellerates and slides away as a unit. There is no way to prevent this, regardless of internal strength or alignment.
That's why I said that you want friction from the ground.