Ok, you're wondering how to develope and maintain killer Abs. after the age of fifty. I can tell you in two words, BURN FAT. Now lets talk ABS 101. First and foremost, you must eat the right food. By that I mean, high-quality low fat proteins such as fish, beans and poultry, lots of fruit, veggies and whole grains. They will help burn fat. In Addition, you much have a balanced exercise program. That includes, weight training and of course my personal favorite, cardio .Choose an Ab exercise that you like and you will stick with. I personally like the Medicine ball crunch. To do this, I place a medicine ball between my knees, raise my legs off the floor and do crunches. Next, I keep the medicine ball in place and do leg lifts while bringing my knees toward my chest. Finally, I turn slightly to each side, medicine ball in place, legs raised and do crunches to hit my obliques. Remember, in order to develope a killer gut, you must burn fat. The abs are there. You just have to uncover them.