Hello Tommy Pavia,
Another reason is because of the obesity epidemic causing the spine to go out of alignment and the core is where the body’s stability originates. The other culprit is the sedentary factor affecting poor posture which causes low back pain, a huge problem of its own.
The core is the spine, hips, and the muscles which attach to them. So, you can see how it is easy to affect the posture in a good or bad way. So many people are out of balance; so, by calling it the core, maybe people will better balance their workouts for the anterior as well as the posterior.
NAPS 2 B Fit