Simple Core Workout

http://www.runnersworld.com/article/0,7120,s6-238-263-266-12756-0,00.html?cm_mmc=training-_-2008_08_12-_-training-_-QUICK%20FIX%3a%20Core%20Workout%20

I tried to just copy and paste this, but for some reason the pictures don't show up. This is the core workout I am going to try 2-3 times a week. Hopefully this helps.