When most people think of the core muscles, they think of the abs and lower back, but any muscle that attaches to the pelvis could be considered a core muscle.
 
Visit ab-core-and-stomach-exercises.com to learn core workout tips.

Did you know that you can easily turn arm exercsies and leg exercises into core exercises?
You can use a simple upper body core training stability progression to turn arm exercises into core exercises.
And you can use a simple lower body core training stability progression to turn leg exercises into core exercises.

There is a difference between core strength and core stability. 
Core strength is best achieved when you move through the entire range of motion at the spine, and core stability is best achieved when you do isometric exercises that require little to no moevment in the spine and pelvis.
 

Core exercises are so important for a healthy and strong body.  Try one of these core workouts or read about 14 core training tips.

Core training is important for overall health, protecting the back from injury, improving posture, and improving sports activity.
 
Here are some core workout tips.

If you're thinking about buying ab exercise equipment, consider buying a bosu ball.
The bosu ball can be used for ab exercises, lower back exercises, core exercises, and balance exercises.  Because of the additional stability challenge you can develop your balance and coordination.
 

Back in 2000, I took a week long core training seminar with Rebook University, and it completely changed the way I thought about personal training and core training.
 
I was the only trainer in the gym who knew how to use the core board and it definitely helped my business.
 
Here are a few core board exercsies: plank twist, push up with twist, standing firing, medicine ball chops.
 

The plank is a great core exercise, and it's been really popular in fitness programs for quite a few years now.
I consider the plank and indirect ab exercise because in addition to the abs it targets the hips and the shoulders.
Core Training really is about training the entire trunk, building hip stability, and also building shoulder/ scapular stability.

There is so much misunderstanding about what core is. Check out the video explanation by an exercise science professor. http://www.physicalfitnet.com/ask_the_fitness_experts/what_is_core_training-2.aspx