You're talking about being prone to cramping all the time and not just during workouts, right?
I've actually had this same problem within the past few months. I think stretching might help, but I haven't been really dedicated to stretching on a daily basis.
I actually get the bad ab cramps if I do very many situps. Like once I get my abs fatigued, I can't do another set that whole day without cramping up.
But I get those odd torso cramps around my ribs or lats when twisting or doing other unique movements.