Sonya Davison Lost Her Twin Pregnancy Weight in 3 Weeks. Here's What's Realistic for the Rest of Us

Sonya Davison says that a combination of factors led her to losing her pregnancy weight within just 3 weeks of giving birth!

Three weeks after delivering premature twins, Sonya Davison posted a photo of her stomach. It travelled round Singapore’s mum groups through 2017: a woman who had carried two babies and looked, by her own description, like she’d never been pregnant. The comments split the way they always do, half “how?”, half “that’s not normal”.

Both halves were right. What follows is her account of how it happened, what she’s doing now, and what the evidence says most mothers should expect instead.

Sonya Davison’s three weeks came from a strong core before pregnancy, gaining only what she needed, walking for hours during pregnancy, and exclusively breastfeeding twins. For most mothers, the realistic timeline is six months to a year.

Her own advice, then and now: if you’re breastfeeding, lose weight slowly through healthy eating, and treat the number on the scale as the least interesting part.

Who Sonya Davison is

Born in Thailand to a Thai mother and British father, Sonya Davison came to Singapore by way of Australia and the UK, and built a career as a model and television host before her twin boys, Tristan and Raiden, arrived in April 2016. At the time she was married to Judd Sanchez, an American-born Filipino working in tech, and she posted as Sonya Davison Sanchez to more than 250,000 Instagram followers.

She now posts as Sonya Sukha, with about 225,000 followers, and her feed has shifted from postpartum body content to the boys, who turned ten in 2026, and to homeschooling, which she’s spoken about publicly as the family’s choice over mainstream school. The weight-loss post is still the one she gets asked about.

How she lost the weight in three weeks, in her words

When the questions wouldn’t stop, she answered them in a long Instagram caption. This is the account, lightly trimmed:

“A year ago, I made my husband promise to still love my body after I gave birth. During my pregnancy, I mentally prepared myself for a post-twins baby body. I, like many, thought that it wouldn’t be possible to get my body back after pregnancy, especially after seeing my ginormous twin belly. I was wrong.” “Pre-pregnancy: I had strong core muscles before I became pregnant, from HIIT home workouts. Pregnancy weight gain: I only gained what I needed to. You don’t literally have to ‘eat for 2’ when you’re pregnant. I gained mostly on my tummy, so I only had to lose that extra weight, which is a whole lot easier than the whole body.” “Staying active: I walked A LOT while I was pregnant. I would walk for 2 to 3 hours every other day and this kept my metabolism up. Breastfeeding: I breastfeed exclusively. When you breastfeed your stomach contracts which helps your uterus shrink quicker. Times that by 2, preemie babies that fed hourly, and you have the perfect storm.” “Every person’s body is different but this is what worked for me. Having said that, losing the weight was just the first step. I had lost a lot of my muscle tone in my tummy which meant one meal and it would all hang out again till the next morning. At 3 months postpartum I began a simple 20 min home workout routine with hubby and the muscle reconstruction began.”

And the line that got less attention than the photo: “If you are breastfeeding, it’s important and safest to lose weight gradually by healthy eating.”

Why her three weeks isn’t the benchmark

Read her account again and the ingredients are unusual. A high level of fitness before conception. Weight gain at the low end of the recommended range for twins. Babies born premature, which means less weight gained in the final weeks. Two newborns feeding round the clock, which burns more than a single baby does. And a body type that carries pregnancy weight almost entirely in front. Take away any two of those and the timeline changes.

For most women the picture looks like this:

The first two weeks take care of themselves. Baby, placenta, amniotic fluid and the extra blood volume account for roughly 5 to 6kg that leaves without any effort.
Six weeks is when doctors clear most women for exercise beyond walking, after the postnatal check. Earlier for some, later after a caesarean or a difficult tear, and if you’re already thinking about baby number two, it’s worth reading up on the caesarean scar niche and secondary infertility before you start planning.
Six months to a year is the typical window for returning to pre-pregnancy weight, and a good number of healthy women settle a few kilograms above it for good.
Breastfeeding uses about 300 to 500 extra calories a day, but it also makes many women hungrier, so the net effect on weight is smaller and slower than the internet suggests. If the feeding itself is the harder problem, a painful latch or a baby who won’t settle, lactation consultants in Singapore will get you further than any diet plan.

What safe postpartum weight loss looks like

Obstetric guidance in Singapore and elsewhere lines up with Sonya’s own caution. While breastfeeding, a loss of about half a kilogram a week is the sensible ceiling, because faster loss can reduce supply and leaves a new mother running on empty. If you notice your output dipping, read up on how to boost your milk supply before you cut anything else from your plate. Beyond that:

Walking counts from the first week if you feel up to it. Twenty minutes with the pram is exercise.
Core work waits for the six-week check, and starts with the pelvic floor and deep abdominal muscles, not sit-ups. If your stomach domes along the middle when you lift your head, ask about diastasis recti before any ab workouts.
Confinement food isn’t the enemy. Sesame oil chicken and pig’s trotter vinegar are calorie-dense, but a month of them won’t undo anything. The habits that matter start after the confinement nanny leaves.
Sleep decides more than diet. Short sleep raises hunger hormones. Losing weight while up four times a night is hard for reasons that have nothing to do with willpower.
Muscle tone is the slower project. Sonya’s own account says it: the scale moved in three weeks, and the tummy took months of daily work.

What she says about it now

Nearly a decade on, the parts of her story that have aged best are the ones that had nothing to do with the photo. She made her husband promise to love her body before she knew what it would become. She wrote “every person’s body is different” in the same caption as the before-and-after. And she moved on to the things that filled the next ten years: two boys, a homeschool table, and a feed that’s mostly about them.

Common questions

How did Sonya Davison lose her pregnancy weight in 3 weeks?

By her own account: strong core fitness before pregnancy, gaining only the recommended weight, walking two to three hours every other day while pregnant, and exclusively breastfeeding premature twins who fed hourly. She’s said herself that every body is different.

How long does it take to lose pregnancy weight?

Six months to a year for most women, with the first 5 to 6kg going in the first two weeks as fluid, blood volume and the pregnancy itself leave the body. Some women settle a few kilograms above their pre-pregnancy weight.

Does breastfeeding help you lose weight?

A little. It uses roughly 300 to 500 extra calories a day, but it also increases appetite. Rapid loss while breastfeeding can reduce milk supply, so about half a kilogram a week is the sensible limit.

When can I start exercising after giving birth?

Walking as soon as you feel able. Anything more, especially core work, after the six-week postnatal check, and later after a caesarean if your doctor advises it.

Who is Sonya Davison?

A Thai-British former model and TV host based in Singapore, mother of twin boys born in 2016, and now a parenting and homeschooling content creator posting as Sonya Sukha.

If you’re counting weeks

Sonya Davison’s three weeks was real and it was rare, stacked on a set of conditions most mothers will never have. Six months to a year is normal. Half a kilogram a week is the ceiling while you’re feeding. A photograph taken at 21 days tells you nothing about your body, only hers. The best line in that caption had nothing to do with weight: she asked to be loved as she was, before she had any idea what the photo would show.