[economex]

People neglect the pulling muscles for some reason. The abdominals are especially critical to women. If they are not kept fit and firm, women will experience, more than men, a sinking of the internal organs which produces that lower abdominal belly that you all hate. Once those organs sink it is not really possible to fully recover them to their original position.
You need to keep the abs firm at all times.

Biceps and pectorals are also neglected by people doing moderate exercise. Basic, simple pullups will remedy the entire problem with the major pulling muscles.

I recommend moderate exercise to be fit and healthy. I wouldn't emphasis anything to a radical degree. One will pay, in the future, for any extreme exercises done over time. In my youth I was a competitive weightlifter, mountainclimber, martial artist, navy diver, and some other equally insane things; and now I hurt every day of my life. I did experience some radical injuries; but even the tally of what I did causes me pain. I think it's better to just be fit and lean than to blindly do things now that will haunt you for the latter years of your life, when pain means a lot more. haha.

Good Luck!