How do you get flat abs?
I feel like when I'm straining to do a sit up and especially a plank my ab muscle sticks out instead of staying flat. Trying to hold in my abs while really working hard isn't easy. As the workout continues it gets harder. Is this part of the process of building my ab muscles? Or am I doing something wrong? Are there specific ab workouts that can help this? Do I need to ahotel on my core? I need help please.