I dont know about abs seems like the only reason to work on them is if your "skinny" or low body fat...So if im a bigger kid would doing ab workouts even do anything? Well i know your abs get stronger but is there any different appearance?
Not it appearance, but a strong midsection helps your squats and bench, and most other power exercises. But they are trained through power exercises also, so you don't need to supplement them too much.