The Ultimate Yogi

I used to do yoga very regularly when I lived in Massachusetts, as in three to five times a week.  Now that I'm approaching 40 years old (OK, it's still 8 months away) and I only get to yoga occasionally, I can only dream of certain ranges of flexibility.

This is all heightened by having a nearly 6-month-old who can put his toes in his mouth.  I tried to capture this feat with the iPhone camera, but couldn't quite manage it.  But, trust me, he can do it (like most babies, I'm sure).  Why can't adults retain some this?  Instead I feel creaky when I stand up from a sitting position half of the time.  It's a little scary and pathetic all at the same time.