I am sceptical of people who claim to loose weight from just "walking", i.e. without some other form of life-style change.
oh wait, the thread title was WALKING off the weight, sorry, I acccidentally read an 'n' instead of the 'L' in there.
Longer, low-intensity activity, like brisk walking or easy cycling, burns fat.
Your body converts carbohydrates to sugar, and then converts unused sugar to fat.
If you eat a lot of carbs, then you need to burn the sugar with high aerobic activity to prevent it becoming fat.
If you don't eat the carbs in the first place, then a good brisk walk every day is plenty sufficient to burn away fat.
So, eat pasta, bread, breakfast cereal, pastries ==> go running
or, don't eat that stuff ==> go walking
That said, your body will benefit from strong muscles - It's the best protection against injury. It can be as simple as some press-ups and pull-ups every 2nd day.
Isn't it also true that muscle can simply burn calories during rest, too? So if you have a high % of muscle you tend to burn more calories just by sitting there than if you have a higher % of fat? Or am I confusing that with something else?
I don't think you can really lose weight through "ordinary" walking. By that I mean the normal strolling / ambling along pace that you do when you're out sight seeing or shopping. I've done a ton of that in my life (shopping I mean!) and not lost weight.
For me it was a combination of dieting - with a calorie target of 1500 and cutting some carbs (especially in the evening) and aerobics 3 to 4 times a week, 40mins a time, that did the trick. A year later and I put back on maybe 1 kilo so I'm pretty pleased with that - these days I'm just doing the exercise part and not actively dieting although still watch what I eat and probably overall eat less and healthier than I did before.
I also think that finding something you like to do and that fits in your schedule when you're a busy new mum is as important as what you actually do exercise wise. I found that I really love to do boxing-aerobics because it's fun to punch and kick the heck out of thin air when you've spent all day in the office or at home with a whiney kid - it's a great release! So I actually look forward to my exercise days, whereas before I always found it a bit of a chore - doing it because I felt I had to as I was fat was not really giving me enough incentive!
By the way - doesn't sex burn lots of calories?
Edited for righteous justice.
Bring it on now
A very nice although could be painful exercise also is squatting while carrying your baby in your arms. I did alot of it to get rid of "thunder thighs" and when i got bored of it i decided to scrub our wooden floors using this...Im sure these exist only in 3rd world countries but it worked really well for me and our floors were always shiny!