I'm a personal trainer — these are the 5 best exercises you can do for your corset muscle, and no, none of them are sit-ups

Here are 5 exercises that target your 'corset muscle' ...

5 Standing Exercises That Flatten Lower Belly Pooch Faster Than Gym Machines After 55

Try standing exercises to flatten lower belly pooch after 55, with expert guidance from NASM-CPT Felicia Hernandez.
Yahoo

The 15 Best Core Workouts You Can Do at Home, No Equipment Necessary

Danny Saltos is a NASM-certified personal trainer and health coach, specializing in strength training and cardio. With 18 years of experience, Saltos has been training clients since 2006, both in ...
Yahoo

What You Need to Know About Your 'Core 4' Ab Muscles

One part of training I always tell clients is most important to realize right off the bat: the body is highly integrated. Your body is interconnected from the top of your head to the ends of your toes ...

5 Bed Exercises That Flatten Waist Overhang Better Than Floor Workouts After 55

Bed exercises to flatten belly overhang after 55, from CSCS Jarrod Nobbe. Try 5 core moves that feel joint-friendly.

Deep Core Exercises Are Everywhere RN, Promising To Be the Most Effective Way To Train Your Abs – 9 for a Defined Midsection

New core level, unlocked.
WebMD

Types of Muscle Contractions

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.
Medical News Today

Eccentric exercise benefits and examples

Eccentric exercise focuses on movements, or phases of a movement, that lengthen the muscles. Some examples of eccentric exercise include lowering into a squat or lowering into a press-up. In contrast, ...