In February this year, Toronto-based mum Ana-Maria Klizs realised she was in a bit of a rut. She decided to do something about it.
As she celebrated her 35th birthday, Ms Klizs noticed that she was feeling sluggish and was struggling to keep up with her three young sons.
"I gained over 36 kilos with my third baby and suddenly found myself weighing in at over 90 kilos for the first time in my life," she told Popsugar.
"I gained weight with all three of my pregnancies and never quite lost it all after any one."
"I realised I wasn't happy, and my son Henrik was almost 1, so saying, 'I just had a baby' didn't feel quite right anymore."
My run this morning was demoralizing, after a week of no workouts and no running trying to get through the antibiotics and letting my body heal, I went for an easy run today and it was hard. I had to walk twice, I wanted to quit the minute I left the house. It just sucked, especially when two weeks ago I was running 12+ km no problem. But then this photo popped up in my FB feed...1 year ago today. Same kids, maybe a bit older, but a different "me". And I remembered that I started and stopped many times before, and setbacks are only permanent if you let them. So I'll repeat #bbg week 13 starting tomorrow, and give myself a break. Because in total it've done a total of 17 weeks of hard work using the @sweat app, and 1 week of rest doesn't really change that. #bbgtransformation @kayla_itsines #sweat #bbgmoms #bbgcommunity #momof3 #momofboys #momlife #boymom
"I was just done with excuses, done waiting for people to 'give me time' to work out. I decided I'd had enough and if I wanted to live a long and happy and strong life with my boys, I was going to have to prioritise myself too."
Within four months she managed to lose 15kg, an achievement she is enormously proud of.
"Who would have thought I'd get in the best shape of my life at 35 and with 3 kids in tow?" Ms Klizs wrote on Instagram.
"I still have stretch marks on my hips, I have a wrinkly saggy belly button, my chest has shrunk down to nothing but I kind of like it all and the transformation feels sweeter because I know what my body has been though carrying and feeding three babies."
"I only had one goal in February when I started all this. It was to be strong and feel happy," she wrote.
"I love that today I can say 'yes' when my seven-year-old asks me to walk them both to school because I know I have the lung capacity to run to both schools and come home again. I love that I can say "yes" when my 25kg three-year-old asks me to pick him up because he's tired of walking. I love that I can carry my baby around and still cook dinner without hurting my back.
"I love that I can breathe normally again, that my stomach isn't constantly hurting me and that I have the energy to get through a day with three boys and not collapse on the couch the second they're in bed.
"I love that I decided I was as important as my husband and children are and that I also matter. Because for better or worse, right now I'm kind of the glue that holds this family together and makes the wheels spin on a daily basis."
How she changed her diet
Ms Klizs, who has a lifestyle blog called BluebirdKisses decided not to follow a tradition "diet" as in the past she has found they're unsustainable. Instead she decided to adhere to the 90/10 rule: Ninety per cent healthy food and 10 perfect food she loves, healthy or otherwise.
"I didn't cut carbs; I replaced white bread with whole grains. I replaced white processed sugar with maple syrup. I replaced butter with olive oil. I forced myself to eat one giant salad a day … every single day," she explained.
Whenever she goes out for dinner with friends or her partner, she makes sure she orders a "giant" salad first, with olive oil and vinegar on the side so she can mix her own dressing.
"By eating that first, I found I wasn't as hungry for the cheeseburger I was going to eat next, so I would naturally portion control it," she explained to Popsugar.
She also ensures she eats protein with every meal, along with lots of fruit and vegetables.
How she changed her exercise regime
Prior to having children, Ms Klizs ran marathons and half-marathons, so she has started to introduce running back into her weekly routine.
"I started running in my 20s after finding myself overweight from years of residence food and lack of activity," she wrote on her blog.
She credits Aussie Kayla Itsines' Bikini Body Guide (BBG) with getting her in shape.
"I'm on week 18 of BBG, four weeks of @kayla_itsines beginner program and 14 weeks of BBG 1.0 and 2.0," she explained on Instagram.
"It's part of my life now. But the biggest change is the mindset. Through the experience I realised I'm happy with me and I think I'm setting a good example for the kids too."
She does three resistance days a week, 28 minutes each, at home. She also runs three to four days a week, alone, with a stroller, with her dog, or all of the above.
She says she uses the @sweat app "religiously".
"I love that I can incorporate the runs I love with the strength training I need and it's all super flexible and I can do it from home every day. It's quite literally changed my life more than just changed my body."
Ms Klizs advice for anyone wanting to lose weight is "the most important thing is to do it for yourself".
"Don't do it for the scale; don't look at it with a singular goal in mind. Look at this as a marathon. Take the steps you need to get to the end and don't worry about the time it takes. Before you know it, you'll find a new lifestyle, a new energy, and I promise it's worth it."