If you're actually eating real food, creating a calorie deficit, and hitting the gym with regularity, there are a few ab exercises that prove more effective at carving your six pack. and a few you may want to skip altogether.
Plank exercises benefits are many. The plank is one of the best overall core conditioners around, and unlike crunches, it keeps your spine protected in a neutral position. Here are 3 ab workouts to strengthen core and lose excess belly fat.