DD1 is nearly four. When she doesn't want to do something she's been told to do - like put away toys, for example - she throws herself on the floor and says she can't do it because she keeps falling over. Usually this is when she is tired or in a bad mood.
I mostly think this is just her way of saying she has a good reason to refuse doing said thing, but sometimes wonder whether there's more to it.
As it only happens when she is tired, could it be that she actually is having trouble walking?
(I feel a bit silly asking about this, but I'm at a loss re how to deal with it.)