Why don't thin people exercise their abdominal muscles during the period of gaining muscle mass

During the period of gaining muscle in thin individuals, it is usually not recommended to specifically practice abdominal muscles. Muscle gain requires priority to ensure calorie surplus and coordinated development of muscles throughout the body. Isolated training of abdominal muscles may consume too many calories and affect the efficiency of muscle gain. The core principle of muscle enlargement is to break down muscle fibers through resistance training, and then achieve excessive recovery with sufficient nutrition and rest. As a small muscle group, there is a contradiction between the calories consumed by abdominal muscles and the surplus calories required for muscle growth. When the body fat percentage is low, the abdominal muscles themselves have a certain degree of visibility, and overtraining may lead to an imbalance in heat distribution. Compound movements such as squats, hard pulls, and bench presses can simultaneously stimulate the core muscle group, and the abdominal muscles have been fully activated during the process of stabilizing the trunk. During the muscle building phase, the daily protein intake should be at least 1.6 grams per kilogram of body weight. If additional abdominal muscle training is added, it may force the body to break down protein for energy.

Some fitness enthusiasts may have body problems such as pelvic tilt, and overtraining the rectus abdominis muscle may exacerbate the imbalance. This type of situation requires correcting posture before considering local reinforcement. professional bodybuilders will only undergo isolated abdominal muscle training in the later stages of preparation, when their muscle mass has reached the standard and requires precise sculpting. When the body fat percentage of ordinary fitness enthusiasts exceeds 15% during the muscle building period, the abdominal muscle lines will be covered by fat, making it difficult for specialized training to show results. During the muscle building period, priority should be given to ensuring the training capacity and intensity of compound movements, controlling the frequency of abdominal muscle training to no more than 2 times a week, and keeping each training session within 10 minutes. Maintain a daily calorie surplus of 300-500 calories in diet, with high-quality proteins such as chicken breast, beef, whey protein, etc. as the main sources of protein, supplemented with moderate carbohydrates to provide training energy. When the body fat percentage drops below 12%, adding specialized abdominal muscle training can achieve better body display effects.