Why don't they get it?

When you are tired, you sleep to get your energy back. It's simple logic that somehow babies and toddler seem not to get.

Why is it that they cry and get angry when they are tired when all they need is a bit of sleep.

Yes, it's Sunday afternoon and for the second day in a row, neither Oskar nor Thomas are willing to take their nap. 

At least Oskar is not crying anymore...

Can't wait until they outgrow this phase.