I blame it on genetics.
Post-natal massage, breastfeeding, running after two kids - everything the old wives say will help you lose the baby weight - I've done them all.
And yet, I'm still 15kg heavier than my pre-pregnancy self about four years ago.
The weight has been, well, stubborn.
So much so that well-meaning colleagues and friends have started asking whether I'm expecting my third child.
A nice lady even gave up her seat to me on the MRT.
I will admit to sometimes feeling crestfallen when mummy peers - friends who gave birth around the same time - bounce back to their svelte figures just by breastfeeding and absolutely no exercise. Or so they claim.
And let's not even get started on celebrities who walk around with their big bumps of glory, but shrink back to impossibly minuscule sizes just weeks after birth.
But they probably have personal trainers, and no real "jobs", which means they get to spend all day working out.
While pregnant, I tried to reject the pressure to keep my weight down, because it was more important to stay healthy and be able to breastfeed.
Indeed, on both occasions, I felt a sense of liberation - here was an excuse to eat without worrying about weight.
Besides, why are we so judgmental about women who enjoy their pregnancy (and their food), storing additional reserves to feed their children?
Just let mums be mums.
We should be allowed to enjoy the process and not fret about the changes the body needs to go through. Surely one can be expected to put on some weight when trying to grow a watermelon-sized being in your belly.
Not to mention having to lug that weight around for nine months. (Okay I exaggerate, the watermelon weight is only in the last three months or so.)
But I am also candid enough to admit that everything should be in moderation.
And now, it's time to shed the kilos.
Not because I have succumbed to peer pressure, but because my feet seem to have succumbed to gravitational pressure.
I have developed plantar fasciitis, a painful condition that affects the heel and underside of the foot.
It came from lots of heavy-lifting, including lugging my laptop and breast pump to work every day.
Not to mention carrying my two little ones - aged three, and one - who weigh 15kg and 10kg.
So look out world, I'm losing the baby weight.
Just in my own time.