Children Of Player objects jitter

So whenever I make an object the child of my player object, it jitters lightly, I don't have a custom-made player controller or movement system. Even if I just attach a cube to the player as a child, it shakes around. I don't have any effects attached on my camera or anything either. All the other objects in the scene don't shake, only the objects attached to the player. Please help me :P I will provide and other information you would need.