The importance of posture

So I'm learning to sit up all on my own pretty well. To you it may not be that impressive but I've only been able to hold my own head up for a couple of months and it's a pretty big step. Here I am peeking at my mom from my high chair.
And here I am practicing sitting up by myself. Don't worry, it's a short one:

Hey, don't laugh, it's really not as easy as it looks. Balance is key. On minute you're smiling and happy, the next you're toppled over not knowing what hit you.

Oh, and by the way, this learning to crawl before you can walk thing is serious and frustrating business. More on that next time.