Well, the most likely cause of all three of these problems is not knowing how to properly activate your core, says personal trainer and TODAY contributor Stephanie Mansour.In fact, she called failing ...

10x each side," she says. Reason: "The transverse abdominal muscle supports the midsection, while the obliques and rectus abdominis strengthen with the movement. This exercise builds strength and ...

These six exercises target key muscle groups that ... our core muscles like the transverse abdominis, rectus abdominis, and internal and external obliques also pull a lot of weight in the process.

An excellent—and in my opinion, much underrated—exercise to do this is the bear ... the bear plank targets more than just your front abdominal muscles. It also engages deep-lying core muscles like the ...

The Pallof press is a simple yet effective anti-rotation exercise that targets the transverse abdominis (a.k.a. your deep internal core muscles). MacPherson tells us, "The Pallof Press is easier on ...