The images of Alysia Montaño running the 800-meter at the USA Track and Field Championships last week are all kinds of inspiring. The 31-year-old finished seventh in her heat with some precious cargo in tow: Montaño is five months pregnant with her second child.

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About last night… 2017 USA Nationals with baby #2 at 5months pregnant. I have some pretty awesome maternity photos from both pregnancies 🤗#Wonderwoman #ShesAllOFUS #beyourjourney

A post shared by Alysia Montaño (@alysiamontano) on Jun 23, 2017 at 12:33pm PDT

But while Montaño—who holds six national titles in the 800-meter—received plenty of support for her feat, she also got a ton of flack. In tweets and Instagram comments, people expressed "concern" for her baby and called on the elite athlete to stop running. This isn’t the first time Montaño has dealt with this kind of backlash either. In 2014, photos of her (with her daughter Linnea) in the same event went viral, and led to similar criticisms.

After her 2014 race, Montaño explained that her doctor had cleared her to compete at the Championships. "That took away any fear of what the outside world might think about a woman running during her ," she said.

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What Montaño's critics don't seem to understand is that the American Congress of Obstetricians and Gynecologists encourages pregnant women to keep up their usual level of fitness as long as they get the O.K. from their doctor. Physical activity can have many benefits, the group points out, such as easing constipation and

The efforts to shame Montaño are frustrating and disappointing. But the backlash has made Montaño even more passionate about clearing up the confusion on the subject. On Instagram yesterday she posted a photo of herself racing in 2014 with a quote: “I know there is a lot of stigma and really, the word is ignorance, behind pregnant women exercising. And the truth is it’s good for the mom and the baby."

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3 years after I ran the 2014 USA Nationals at 8months pregnant I want to echo the same message after my run at the same event this passed week, this time pregnant with my second at 5months pregnant. My intention is to inform and to empower. Much Love ❤️ PHOTO from: 2014 USA Nationals (8months pregnant with my daughter Linnéa, who was born at 7lbs 15ounces 19.5 inches on August 15,2014 after a full 40 weeks of gestation, happy and healthy!) ▫️ ▫️ ▫️ #health #fitness #fit #fitmom #fitnessaddict #missflower #fitspo #workout #momlife #cardio #gym #fanvee #health #healthy #instahealth #healthychoices #active #strong #motivation #fitmomsofig #determination #wshhfitness #fitfam #fitmominprogress #exercise #noexcuses #Run #Running @fitpregnancy @healthy.pregnancy @pregnancyworkout #igfitmoms

A post shared by Alysia Montaño (@alysiamontano) on Jun 25, 2017 at 2:34pm PDT

Montaño also regrammed a supportive post from trainer Holly Perkins. Perkins praised Montaño as an inspiration, and reiterated the message that exercising while pregnant is beneficial for many women. “Every single client of mine who worked with me through her pregnancy reports that without question, every aspect of her experience was better because she stayed active,” Perkins wrote.

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Thank you for the L❤️VE everyone. I love this message I've reposted for all to read below 👇🏾 #Repost @hollyperkins ・・・ Alysia Montano races in the 800 meters at the 2017 USATF Outdoor Championships while 5 months pregnant. YES, it is perfectly safe to be active during pregnancy. In fact, every single client of mine who worked with me through her pregnancy reports that without question, every aspect of her experience was better because she stayed active. YES, each pregnancy is different, and each woman needs to make this decision for herself, with her doctor. The ACOG official position statement on pregnancy and exercise says: "Physical activity during pregnancy has minimal risks and has been shown to benefit most women, although some modification to exercise routines may be necessary because of the normal anatomic and physiologic changes and fetal requirements." Therfore, WAY TO GO @alysiamontano and @emilyskyefit for being amazing inspirations. #womensstrengthnation Big thanks to 📷 @jeffcohenphoto for this amazing moment.

A post shared by Alysia Montaño (@alysiamontano) on Jun 24, 2017 at 5:29pm PDT

Montaño has spoken up in the past about wanting to be an advocate for fitness during pregnancy. In an interview with Spikes she said, “I’m not the first pro athlete to get pregnant, but I wanted to make a stand; enlighten and educate people."

Major props to Montaño for staying the course and not backing down.