Core Strength Exercises for Marathoners

My Marathon coach, Coach Marcin, shares this core strength training routine. Do this 2 times per week in addition to your regular running. I do it on days I am not doing weights. Core strenght will help you on those long runs and in general make you feel good.

The Core Muscle Strength & Stability Circuit:

Position the watch on the ground where you can easily see it
Assume the basic press up position (elbows on the ground) - as in the picture above

1. Hold this position for 60 seconds (rest for 15 sec)
   Lift your right arm off the ground
2. Hold this position for 15 seconds (rest for 15 sec)
   Return your right arm to the ground and lift the left arm off the ground
   Hold this position for 15 seconds (rest for 15 sec)
3. Return your left arm to the ground and lift the right leg off the ground
   Hold this position for 15 seconds (rest for 15 sec)
4. Return your right leg to the ground and lift the left leg off the ground
   Hold this position for 15 seconds (rest for 15 sec)
5. Lift your left leg and right arm off the ground
   Hold this position for 15 seconds (rest for 15 sec)
6. Return you left leg and right arm to the ground
   Lift your right leg and left arm off the ground
   Hold this position for 15 seconds (rest for 15 sec)
7. Return to the basic press up position (elbows on the ground) - as in the picture above
   hold this position for 30 seconds

What do you think?