Roughly 35 of the 639 skeletal muscle groups that make up the human body are responsible for flexing, extending and stabilizing your core. Typically gym-goers remember to strengthen the area with ...

Strengthen your core after 55 with 4 chair drills that train rotation, lower abs, and anti-rotation without floor strain.

The fitness equipment industry generates billions annually selling specialized machines that ultimately perform simple functions: creating resistance against muscle contraction. Resistance ...

Your favorite ab-building machine at the gym may be causing you more harm than good. That's right—we're talking about the torso rotation machine. This is the Chubby Checker–inspired ab machine you sit ...

Get the most out of your rotational core exercises with these small tweaks that will help strengthen your abs, especially your obliques. Twisting, or rotational core exercises, are great for ...