Should Pregnant Women Be Weightlifting?

Exercise is essential for a healthy pregnancy, but one photo of a pregnant woman weightlifting has ignited a fiery debate on how much pregnant women should sweat. 

Lea-Ann Ellison, 35, a stay-at-home mom in Los Angeles, is eight months pregnant with her third child and attends regular CrossFit classes at her local gym. Last week, Ellison emailed the company touting her success on the workout and included a a phone of herself lifting weight. A few days later, the company posted the photo on its Facebook page, subsequently triggering an outcry on social media. Ellison received thousands of comments — many of which were negative — between her personal Facebook page, the CrossFit Facebook page, several media outlets and email. 

The question I like to ask is, should women in the last trimester of pregnancy be exercising especially carrying heavy weights?