How long did it take you to lose all the baby weight?

My friends here in Sweden lose their weight almost immediately after birth. They don't really have long confinement periods and "pantang" here so after a week or two, they are back to the gym (doing light exercises of course) and eating healthy. Moreover, most mommies get close to a year of paid maternity leave so they definitely have more time to do the necessary for weight loss like exercise, eat right, breastfeed while taking care of baby.