Well I walked from my flat to my Dad's office yesterday- probably less than a mile and boy do the MBTs work!! You can totally feel the muscles in your thighs and calves working... I even felt my stomach tighten!!
They say to build it up so I did and I am very very glad I did... My hamstrings feel like I've done a big gym class! Excellent!!
I'll be half my size in no time!! (I few pounds would do to start with though!!)
I'll keep you all up to date on the walking progress!