Ok. On this site, it says rollouts are for the Iliopsoas. So what other exercises do you all recommend for abs? (And I have no idea how one would do rollouts standing up, but that's advanced and I'm not.)
Anyone which of the kettlebell exercises shown on this site do you recommend?
Re the number of sets, I'll try to do one warm-up and two that I can do each at least 6 reps but no more than 12. Any more than that and I 'll be in the gym too long.
The rollouts are great for abs, obliques and the back muscles. Also for the hip flexors. The article I linked has almost every possible ab-exercise listed on the bottom chart. Check from there.