Side PlankThe side plank is a great exercise for your obliques and transverse abdominals and is a great addition for any core workout.
The do this exercise correctly start in a push-up position, then lift one hand off the floor and turn your body so that it is side on to the floor keeping your body in a straight line from head to toe.
The exercise can be made a lot more difficult by going into the star position as show in this picture, this makes you a lot more unstable and forces you to work a lot harder.
Or the exercise can be mad easier by keeping both feet on the ground and spacing your feet wider to increase your stability.
This is a static exercise the position should be held for at least 30 seconds and you should do 3 - 4 sets remembering to do the exercise on both side of course.