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Keeping up with Kourtney! From her reality TV start in 2006, to becoming a mother of three, Kourtney Kardashian<\/strong><\/a> has had quite the transformation over the years \u2014 both on and off-screen.<\/p>\n While finding her niche on Keeping Up With the Kardashians<\/em><\/a>, the eldest Kardashian-Jenner sibling\u2019s body has changed as well. Fans watched as the California native\u2019s figure bounced back after her three pregnancies \u2014 she is mother to Mason<\/a>, Penelope<\/a> and Reign<\/a>, whom she shares with ex Scott Disick<\/strong><\/a> \u2014 and beyond.<\/p>\n \u201cI wasn\u2019t into intense workouts when I got pregnant with Mason, and I wasn\u2019t using a trainer at the time,\u201d Kardashian wrote in a May 2020 article on her site, Poosh<\/a>. \u201cI was very into running, usually a quick two to three-mile run with some good music in my neighborhood, combined with some at-home workouts and uphill walks with the stroller.\u201d<\/p>\n The TV personality noted that she \u201cgained exactly 40 pounds<\/a>\u201d while pregnant with all three kids, but lost the weight in different ways.<\/p>\n After Mason\u2019s birth in 2009, Kardashian focused on breast-feeding as a way to drop pounds, writing, \u201cit burns around 700 calories each feeding.\u201d When it came to Penelope\u2019s 2012 arrival, the Kourtney & Kim Take New York<\/em> alum opted for \u201cmellow workouts and a lot of yoga,\u201d which she replicated after Reign\u2019s 2014 birth.<\/p>\n The Poosh creator has spoken freely about her journey to a healthier lifestyle<\/a> for more than a decade. After some fans speculated that Kardashian was pregnant with her fourth child based on her fuller figure in May 2020, the reality star revealed that she\u2019s happy with her body.<\/p>\n \u201cI commented back and said, \u2018This is the shape of my body. I gained a few pounds over this quarantine time, and I love my body and I\u2019m proud of my shape and I\u2019m obviously posting it and this is the shape of my body.\u2019 I don\u2019t think I look pregnant at all,\u201d she explained in a YouTube video<\/a> at the time, referencing the coronavirus pandemic quarantine. \u201cWe\u2019re all shaped differently and that\u2019s my body and I\u2019m proud of it, so that\u2019s how I respond to the negative comments. It\u2019s not always easy.\u201d<\/p>\n The body-positive star has also taken fans inside her dieting journey both on the E! reality show and off-camera. Whether it\u2019s doing keto to slim down for an event or staying away from sugar and preservatives because of their health hazards, Kardashian\u2019s relationship with dieting and exercise is well documented.<\/p>\n \u201cMy body never looked better than when I did the keto diet<\/a> two and half years ago, when I did it for two months,\u201d Kardashian wrote on Poosh in June 2019. \u201cIn my experience, I\u2019ve found the best method to train my body to curb sugar cravings, burn fat and kick-start weight loss<\/a> is by sticking to a keto diet.\u201d<\/p>\n The health-conscious star\u2019s food choices extend to her children\u2019s diets as well. She constantly shares tips and tricks for tasty alternatives for candy or other goodies<\/a> that her kids want. Plus, she does indulge every now and then \u2014 and often shares her recipes for gluten-free banana bread<\/a> and holiday treats.<\/p>\n