A stability ball is a great training tool.

Exercises can be done at home or the gym.

I like  to travel with one.

Generally a 55 cm ball fits most, if you are over 6 feet tall you might want a bigger one (65 cm).

Always follow good spine mechanics.

Spine neutral and abdomen in.

Only perform exercises suited for your fitness level

Novice, Intermediate, Advanced

Perform Sidebridge Test to determine.

See Stabilization video.

Low Back Webpage.