Last week, I saw somebody doing a bridge exercise on a swiss ball, which I thought was a fairly novel idea. It was new to me, anyway. I tried it during my workout in place of my last set of crunches, and I liked it. I mentioned that I wanted to try it with my feet elevated, so today I worked that into my morning’s exercise.
The first set I elevated my feet. It did not work my abs nearly as hard as when my feet were on the floor and my shoulders were elevated. My last two sets I just did the bridge on the swiss ball normally rather than elevating my feet. The extra danger of falling with the exercise not doing as much good did not really seem worth it. My feet were not elevated to the same height as the swiss ball; they were probably about ¾ of the height. I do not know if I will try doing it on the level or not; probably not.