I do sit-ups every day and have been to the gym for professional training. Why can't I develop abdominal muscles? My method is right and my diet is OK enough.
Muscle training is different from ordinary things and needs patience. Like myself, I have been to the gym for professional training. After several months of devil training, my abdominal muscles and chest muscles have been exercised unconsciously. Believe me, nothing is difficult in the world! You will succeed! ! ! ! ! ! ! ! ! !