I have hesitated to write a post on this topic, but it seems to address the concerns of many women who, like myself, are fighting the not-so-slimming effects of multiple pregnancies.
Why do I hesitate? There are only a handful of Bodyweight Training Programs out there. And they all seem to have the same claim-based, immodest-model-driven marketing scheme, to which I'm not entirely favorable. Nonetheless, I'm going to tell you the program I use. It's Eddie Baran's Bodyweight Exercises for Women. Please keep in mind my disclaimer about the marketing style.
I post this because I know from experience that Bodyweight Exercises really do work. In fact, it has been my experience that they strengthen muscles, increase flexibility and tone a body without bulking up size. And they don't take a lot of time. Isn't that what we are all looking for?
I alternate Bodyweight Exercises with interval training for a complete exercise program. (I do modify this slightly during pregnancy.) Every other day, I do Eddie Baran's Fab Five exercises, plus a small selection of others from his book. The entire routine takes about twenty minutes and it does the job.
So, for what it's worth, if you dare to endure the marketing, please check out the above link. I hope it will benefit you as much as it has me.