I am definitely with you on this one. I used to love to work out and now it causes pain most of the time. I haven't noticed if this makes a big difference yet or not, but my mom suggested i eat a banana before my work out so i am going to try to do that and give it a shot. (nothing to lose right?) I also take an anti-inflammatory about a half hour to 45 minutes before working out and that seems to help.

I used to love spin class but found that it is too intense for my body to handle right now, so I do some exercises with hand weights and the floor and my ab ball. it definitely seems to help and have less impact on my body.

I just built up a pain tolerance to it, though I eventually did find some of my post workout pain lessening. Now I mostly do HIIT, and I find the little rests between the intervals helps me recover better than just doing steady cardio (i.e. running on the treadmill).

Some moves I still can't do. I stay away from isolated ab workouts and only do compound movements. This seems to be doing OK for me.

Stretching helps me a lot with that. I don't really exercise all that much because of back and endo pain...but I find that heat/ice/lots of back/leg/ab stretching and easy strengthening exercises (you can even do these in bed), helps significantly so I can do the long commute/walk to work every day