Flattened Woman Best Way To Flatten Stomach/great Abs For 50 Yr Old Woman?

Best way to flatten stomach/great abs for 50 yr old woman? - flattened woman

I am slim, shape and stomach with a hard birth, weight loss, stretched muscles and skin. I do not a tummy tuck, for what is the best exercise or how best to strengthen and maintain a six-pack without having a heart attack, high blood pressure or other problems.