When did you begin to feel normal after birth?

Ke
I have a friend who was out and about at a birthday party in barely over a week after her baby was born, whereas my sister tore very badly and had several months where she was too sore to even stand for more than five minutes at a time.  
 
Obviously things will vary from woman to woman and pregnancy to pregnancy. I was just wondering what the scope was for when you started to feel recovered enough to function normally. I don't mean feeling 100% yourself again, up to sex, and back in the full swing of things.  More like... when you felt like you could leave the house, comfortably take a walk, or manage to do grocery shopping or other day to day things again.