Rachel Pizzolato demonstrates a unique and unconventional core strengthening routine.

Have you ever wondered exactly how your favorite SI Swimsuit models stay in top shape? Ponder no more, as six-time brand model and certified fitness instructor Katie Austin is leading an in-person ...

Model Mahlagha Jaberi manages to look runway ready even when she's in the gym! On Monday, December 9, the stunning star posted a video from a workout in which she rocked a black sports bra by Alo and ...