I think I'm crazy because I just took Sierra for a walk around the neighborhood with Ethan in the Snugli (it's a baby carrier that I strap to me) The last time I put him in it was when he was only a couple months old now he's 17 months old and weighs a lot more! I'm going to feel it tomorrow! Great exercise though.
Oh and I forgot to mention why I put Ethan in the carrier...there was snow on the ground so the stroller wouldn't work. Bring on the snow!