6 Moms Who've Had Super Fit Pregnancies (and Are in Better Shape Than Your Non-Pregnant Self)

Wow, the excuses we use not to exercise – "stubbed toe a few days ago" – now seem invalid

SOPHIE GUIDOLIN

The Australian fitness trainer posted side-by-side photos of her first pregnancy with one child next to a shot of when she was carrying twins at the same gestation. And though she has two babies in her belly in the second photo, her bump is much smaller. "My first pregnancy, I didn't exercise at all," Guidolin told PEOPLE. "I felt tired all the time and struggled with the labor and the pregnancy. My third pregnancy, I exercised the entire time and continued to work all the way through the pregnancy."