So why should we include a core training program into our fitness routine?
Well apart from the benefits mentioned earlier it is worth adding some more:

As you can see the benefits are many. A strong core equals improved all round athletic performance, health and well being.
But now we have to put the core training into practice ....
First we must learn to activate the main internal core muscles such as the TA. This is especially important if you are rehabilitating from injury or surgery...
When
you have mastered this apply it to lying on your front, sitting,
standing and four point kneeling making sure your lower spine is in the
neutral position.
Stand with one leg in front of the other, hip width apart. Rock your weight forwards and backwards. Feel the deep muscles as you practice this by placing your fingertips just below your lower abs at the top of your groin area on the left and right side ( er thats your own groin area just to be clear).
If you are seeing a physiotherapist or other trained professional they can show you exactly where.
Try to squeeze the the deep muscle area more strongly as you repeat the exercise.
Note: Walking is another great exercise to help stimulate these muscles.
The above exercises are a great way for those of you (such as myself) who are recovering from lower back surgery, for example a microdiscectomy or from sports injuries. They provide a gently introduction to core muscle workouts.
They also serve as an excellent way for those of you who have never performed core training to recorgnise these muscles and understand how they feel to be activated.
Also they are only a small example of some of the exercises or methods used to activate the TA and MF. There are pleny more for you to investigate and practice.
I do recognise for most of you who are at a good level of fitness these may appear to be too gentle. Don't be put of because now we can move on to a Core Training Routine.
With all exercises try activating your TA first this will help to focuse the core muscles even more. For more tips on core exercises read this article by Nick Nilsson
1) Plank Exercise
Put a comfortable Yoga mat on the floor and assume the push up position
supporting your upper body weight on your forearms.
Distribute your weight evenly between your toes and forearms.
Keep your body in a straight line like a broom and pull in your belly
button.
Hold this position for 2 seconds, maintaining your body in a straight
line.
2) Superman Exercise
Now
lie on the mat with your face facing the floor. At the same time raise
your arms and legs off the floor, using your pelvis to hold
your weight.
Feel your back tightening and place your body into a hyper-extension
position. Hold this position for at least 2 seconds.
3) Sit Up Exercise
Turn
and lie on the mat with back facing the floor. With your feet on the
floor, bend your knees to 90 degrees if you can. Put your hands over
your knees and slowly lift your upper body by raising your
shoulders and upper back off the floor (the crunch). Keep your eyes
straight and fixed as you lift your upper body. This will help prevent
bending your neck or discomfort. Slide your hands up over your knees
until you are sitting, and then lower yourself slowly to the floor.
Complete the specified number of sit-ups (dependent on fitness level).
4) Pelvis Tip Exercise
Once
more lie on your back on the mat. Place your hands on the floor by the
side of your hips. Now with your feet on the floor, bend your knees at
90 degrees. Still with your hands on the floor raise your hips slowly
from the floor until from your knees down your legs are in a straight
vertical position.
Do not move your shoulders away from the floor, only
your pelvic region. Hold this position for 1 second.
Then slowly lower
your hips to the floor. Repeat this process at least 3 times (more with
practice and increased fitness level).
5) Bicycle Exercise
Lie
on your back on the mat. Place your hands by the temples on your head.
Bend your knees to 90 degrees and relax your feet on the mat.
Assume crunch position and begin cycling. Bring your left elbow to your right
knee, and relax. Bring your right elbow to your left knee, and relax.
Do not bend your neck to avoid discomfort. Repeat process at least 3
times (increase as you improve your fitness level)
6) Leg Raise Exercise
Lie
on your mat with your back facing the floor, with body flat with legs
straight.
With your arms by your side, raise your legs together until
bottom of your feet is pointing up to the ceiling in a 90 degree
position.
Use mid section of your body to push legs higher into the air
with a quick thrust. Then slowly lower legs together towards the floor.
Repeat this exercise at least 3 times (increase repetitions to fit your
personal fitness).
Inhale during the relaxation stage of these
exercises and exhale during the work stage.
The above are just some of the basic, more common exercises.
However a core routine can be quite diverse and incorporate various types of equipment such as the swiss ball.
Just remember to keep your core training routines varied and to incorporate them into your normal fitness routine.
For further information regarding core exercises then why not have a look at this article by Nick Nilsson (if you have not already done so!).